Mark 1:15 Repentance and Faith in Jesus Christ

Mark 1:15 records Jesus' proclamation at the outset of his public ministry: "The time is fulfilled and the kingdom of God has come near. Repent and believe in the gospel!" (LEB) ^[1]. This verse encapsulates the core message of Jesus, emphasizing both a change in disposition and an act of trust.

The immediate context of this verse is Jesus' return to Galilee after his temptation in the wilderness, following John the Baptist's arrest (Mark 1:14). This marks a transition in prophetic ministry, with Jesus taking up the mantle of proclaiming God's imminent kingdom. The phrase "the time is fulfilled" (ὁ καιρὸς πεπλήρωται) indicates that a divinely appointed moment has arrived, signifying the culmination of Old Testament prophecies and the inauguration of God's reign ^[1].

The command to "repent" (μετανοεῖτε) signifies a change of mind, a turning away from sin and toward God. This is not merely regret but a fundamental reorientation of one's life and values. The subsequent command to "believe in the gospel" (πιστεύετε ἐν τῷ εὐαγγελίῳ) calls for trust in the good news of God's kingdom, which Jesus embodies and proclaims ^[1]. This belief is an active, working faith, not a passive assent ^[6]. It involves confessing Christ and is necessary for salvation ^[2].

The pairing of repentance and faith is crucial. Repentance without faith might be mere remorse, while faith without repentance could be superficial. John Calvin, a prominent Reformed theologian, frequently commented on the necessity of such a turning to God, often referencing Old Testament calls to repentance ^{[3, 4, 8, 10, 12, 13]}. Similarly, Eastern Orthodox fathers like John Chrysostom also emphasized the importance of a transformed life in response to God's call ^{[5, 7, 9, 11]}.

The "gospel" (εὐαγγέλιον) refers to the good news of God's kingdom, which has "come near" (ἤγγικεν) ^[1]. This nearness implies both its imminence and its present reality in Jesus' ministry. Doing God's will, which includes repentance and faith, is central to following Jesus ^[14]. The call to repent and believe is therefore a foundational element of Christian discipleship, marking the entry into the kingdom of God.

Sources

Mark “Mark 1:15 (LEB) — and saying, “The time is fulfilled and the kingdom of God has come near. Repent and believe in the gospel!””
Torrey's Topical Textbook “Torrey's Topical Textbook: Confessing Christ — Influences of the Holy Spirit necessary to -- 1Co 12:3; 1Jo 4:2. A test of being saints -- 1Jo 2:23; 4:2,3. An evidence of union with God -- 1Jo 4:15. Necessary to salvation -- Ro 10:9,10. Ensures his confessing us -- Mt 10:32. The fear of man prevents -- Joh 7:13; 12:42,43. Persecution should not prevent us from -- Mr 8:35; 2Ti 2:12. Must be connected with faith -- Ro 10:9. Consequences of not -- Mt 10:33. Exemplified Nathanael. -- Joh 1:49. Peter. -- Joh 6:68,69; Ac 2:22-36. Man born blind. -- Joh 9:25,33. Martha. -- Joh 11:27. Peter and John. -”
CCEL (Reformed) “Calvin, Commentary on Isaiah, Vol. 2, section 53.2: 64:7 66:24 Jeremiah 4:31 5:8 5:28 7:4 7:4 9:1 10:23 10:24 10:24 11:21 17:1 17:5 18:16 19:6 19:8 22:24 22:28 25:9 25:13 25:18 28:10 28:11 30:11 31:15 43:2 48:2 50:11 Lamentations 1:7 2:5 2:8 3:29 Ezekiel 15:3 16:26 20:11 20:24 20:25 26:2 26:14 37:1 43:15 43:15 47:11 Daniel 5:28 5:30 5:31 7:10 7:17 8:20 Hosea 1:7 6:4 8:14 9:6 13:3 Joel 1:13 2:13 2:23 2:28 Amos 1:3 3:6 4:1 4:1 5:10 5:19 8:11 Micah 1:3 1:11 2:11 7:9 7:16 Nahum 3:8 Habakkuk 2:1 2:1 2:1 2:2 3:2 3:2 3:13 Zechariah 9:14 13:4 14:3 Malachi 1:4 1:11 4:2 Matthew 2:14 3:12 3:12 3:12 3:12 ”
CCEL (Reformed) “Calvin, Commentary on Genesis, Vol. 1 (Gen 1-23), section 28.1: Index of Scripture References Genesis 1:1-6 1:1-31 1:2 1:28 1:29-30 2:1 2:1-25 2:15 2:19 3:1 3:1-24 3:7 3:16 4:1 4:1-26 4:7 5:1 5:1-32 6:1 6:1-22 6:11-16 7:1-24 7:11 8:1-22 9:1 9:1 9:1-29 9:2 9:24 10 10:1 10:1 10:1-32 10:21 11:1 11:1 11:1-32 11:28 12:1 12:1 12:1 12:1-20 12:4 12:4 12:6 13:1 13:1-20 14:1-24 15:1-21 15:7 16:1-16 16:2 16:8 17:1 17:1 17:1 17:1 17:1-27 18:1 18:1 18:1-33 18:19 19:1-38 20:1 20:1 20:1-18 21:1-34 21:15 22:1-24 22:18 23:1-20 24:31 25:1 25:13-16 35:7 48:1 Exodus 6:3 12:40 Leviticus 7:18 17:4 18:25 Numbers 6:2”
CCEL/NPNF (Eastern Orthodox) “John Chrysostom, Homilies on Acts & Romans: Index of Scripture References Genesis 1:26 2:10 2:18 2:21 2:21 2:24 2:24 2:24 3:5 3:6 3:11 3:16 3:16 3:16 3:19 3:19 4 4:2 4:6 4:7 4:7 4:7 4:9 4:9 4:10 4:10 4:10 4:11 4:14 6:3 6:3 6:9 9:5 9:20 9:22 11:8 11:31 12:3 12:7 12:7 14:14 15:12 15:13-14 18:3 18:3 18:3 18:7 18:17 18:19 18:27 18:33 21:12 22:3 22:18 25:33 27:27 27:41 27:45 28:12 28:20 29:23 30:1-2 31:7 31:15 31:40 32:10 32:21 32:28 32:29 33:19 37:18 39:1-20 40:23 41:40 41:42-43 42:21 45:5 45:5 45:9 45:24 48:16 49:7 60:8 Exodus 1:14 1:22 2:11 2:13 2:15 2:22 3:1 3:2 3:2 4:10 4:22 5:2 9:11 17:4 18:2”
1 Thessalonians (Presbyterian) “Jamieson, Fausset & Brown on 1 Thessalonians 1:3: work of faith--the working reality of your faith; its alacrity in receiving the truth, and in evincing itself by its fruits. Not an otiose assent; but a realizing, working faith; not "in word only," but in one continuous chain of "work" (singular, not plural, works), Th1 1:5-10; Jam 2:22. So "the work of faith" in Th2 1:11 implies its perfect development (compare Jam 1:4). The other governing substantives similarly mark respectively the characteristic manifestation of the grace which follows each in the genitive. Faith, love, and hope, are the ”
CCEL/NPNF (Eastern Orthodox) “John Chrysostom, Homilies on John & Hebrews: Index of Scripture References Genesis 1:1 1:2 1:3 1:20 1:26 1:26 2:7 2:17 2:18 3:5 3:9 3:9 3:10 3:16 3:18 3:19 4:4 4:7 4:7 4:9 4:10 6:2 6:5 6:9 7:1 11:4 12:1 12:7 12:7 13:15 13:15 15:5 15:6 17:14 18 18 18:15 18:17 18:21 18:21 21:12 22:1 22:1-2 22:12 23:4 25:27 26:18-22 27:41 28:20 37:7 37:9 37:10 47:9 47:9 47:31 49:9 Exodus 2:14 2:14 2:14-15 3:6 3:14 6:9 12:3 12:46 14:21 17:12 17:12 19 19:16 19:16 19:18 19:19 19:19 19:19 19:20 19:20 20:9 20:13 20:19 20:21 23:3 32:10 33:13 33:20 35:23 Leviticus 15:18 Numbers 5 6:3 9:12 11:12 14:3 14:29 16:5 17:12 Deu”
CCEL (Reformed) “Calvin, Commentary on Isaiah, Vol. 1, section 23.2: 62:10 65:20 65:24 Jeremiah 1:6 1:17 2:21 2:21 7:4 7:4 7:21 7:22 9:23-24 9:26 10:14 17:5 17:5 22:7 23:5 23:19 23:36 25:11-12 29:10 30:9 30:9 31:34 32:18 33:15 41:5 48:7 48:13 48:29 48:30 48:32 48:32 48:32 48:34 Lamentations 2:22 3:22 Ezekiel 4:16 13:9 18:20 20:22 34:23 34:23 36:25 37:11-12 37:16 37:24 37:24 47:1 47:1 Daniel 2:44 7:10 7:14 7:27 9:24 9:27 Hosea 2:5 2:13 2:18 2:19-20 2:23 3:4 3:5 6:6 13:11 14:2 14:9 Joel 2:31 2:32 2:32 Amos 2:4-5 3:11 5:11 5:18 5:20 5:21 6:11 9:11 9:11 Jonah 1:2 3:10 Micah 1:16 5:10 6:7-8 7:8 Habakkuk 1:16 2:2 2:”
CCEL/NPNF (Eastern Orthodox) “John Chrysostom, Homilies on Acts & Romans: 1:19 1:20 1:20 2:1-2 2:2 2:8 2:8 2:9 2:9 2:12 2:14 2:14 2:15 3:2-9 3:5 3:8-12 3:16 4:13 4:13 4:19 5:5 5:6 5:16 5:20 5:23 5:23 6:2 6:8 6:9 6:9 6:10 6:10 6:13 2 Timothy 1:5 1:5 1:16 2:9 2:9 3:2 3:12 3:15 4:6 4:6 4:10 4:11 4:11 4:13 4:15 4:17 4:20 Titus 1:7-9 1:12 1:12 1:16 2:12 3:5 Philemon 1:1 1:2 1:2 1:9 1:22 5:13 Hebrews 1:5 1:14 2:2 2:2 5:11-12 6:9 8:11 8:13 9:16 9:26 9:26-28 10:12 10:24 10:28-29 10:28-29 10:29 10:34 10:37 11:31 12:2 12:24 12:29 13:3 13:3 13:10 13:17 13:17 13:21 13:22 13:24 James 1:9 1:18 2:6 2:23 3:4 4:6 5:14-15 5:17 1 Peter 3:21 ”
CCEL (Reformed) “Calvin, Commentary on Isaiah, Vol. 1, section 29.2: 62:10 65:20 65:24 Jeremiah 1:6 1:17 2:21 2:21 7:4 7:4 7:21 7:22 9:23-24 9:26 10:14 17:5 17:5 22:7 23:5 23:19 23:36 25:11-12 29:10 30:9 30:9 31:34 32:18 33:15 41:5 48:7 48:13 48:29 48:30 48:32 48:32 48:32 48:34 Lamentations 2:22 3:22 Ezekiel 4:16 13:9 18:20 20:22 34:23 34:23 36:25 37:11-12 37:16 37:24 37:24 47:1 47:1 Daniel 2:44 7:10 7:14 7:27 9:24 9:27 Hosea 2:5 2:13 2:18 2:19-20 2:23 3:4 3:5 6:6 13:11 14:2 14:9 Joel 2:31 2:32 2:32 Amos 2:4-5 3:11 5:11 5:18 5:20 5:21 6:11 9:11 9:11 Jonah 1:2 3:10 Micah 1:16 5:10 6:7-8 7:8 Habakkuk 1:16 2:2 2:”
CCEL/NPNF (Eastern Orthodox) “John Chrysostom, Homilies on Galatians–Colossians–Thessalonians: Index of Scripture References Genesis 1:11 1:11 1:26 1:26 1:26 1:27 1:27 1:27 1:31 1:31 2:2 2:7 2:17 2:17 2:18 2:23 2:24 2:24 2:24 3:5 3:16 3:24 4 4:9 4:14 6:2 6:3 6:4 6:9 6:12 7:7 8:21 12:1 12:4 12:16 13:10 13:10-11 14:14 14:21-23 15:16 16:5 16:6 17:8 18:11 18:12 18:14 18:21 19:13 19:14 19:24 21:10 21:12 21:12 22:7-8 22:16 22:18 22:18 24:1-67 24:22 24:65 25:21 25:21 26:4 27:46 28:1 28:13 31:42 31:45 32:48 35:18 37:9-10 37:20 39:1 39:6 40:4 40:7 40:8 40:14-15 40:22 41 41:16 42:36 43:14 43:30 45:5 48:15-16 49:9 64:28 Exodus 2:11 2”
CCEL (Reformed) “Calvin, Commentary on Isaiah, Vol. 1, section 23.4: 29:10 30:9 30:9 31:34 32:18 33:15 41:5 48:7 48:13 48:29 48:30 48:32 48:32 48:32 48:34 Lamentations 2:22 3:22 Ezekiel 4:16 13:9 18:20 20:22 34:23 34:23 36:25 37:11 37:12 37:16 37:24 37:24 47:1 47:1 Daniel 2:44 7:10 7:14 7:27 9:24 9:27 Hosea 2:5 2:13 2:18 2:19 2:20 2:23 3:4 3:5 6:6 13:11 14:2 14:9 Joel 2:31 2:32 2:32 Amos 2:4 2:5 3:11 5:11 5:18 5:20 5:21 6:11 9:11 9:11 Jonah 1:2 3:10 Micah 1:16 5:10 6:7 6:8 7:8 Habakkuk 1:16 2:2 2:2 Zephaniah 1:5 1:7 Haggai 2:9 Zechariah 2:8 2:8 3:2 6:12 Malachi 2:10 4:3 4:4 Matthew 1:5 3:2 4:15 4:16 5:10 5:11 ”
CCEL (Reformed) “Calvin, Commentary on Isaiah, Vol. 2, section 53.1: Index of Scripture References Genesis 1:1 1:27 1:27 3:17 3:17 3:18 4:11 4:13 4:14 6:5 7:11 8:1 10:4 10:11 11:29 11:31 11:31 12:1 12:1 12:17 14:6 14:16 15:1 17:7 17:7 19:24 19:37 20:2 20:8 20:14 21:2 21:5 25:1 25:14 25:14 27:38 27:38 32:3 32:10 32:12 36:8 36:9 Exodus 3:8 7:13 8:15 13:3 13:5 13:8 13:14 13:17 14:14 14:21 14:22 15:10 17 18:21 19:5 19:6 19:6 19:6 19:6 20:1 20:2 20:24 20:25 23:32 27:1 29:45 33:3 34:6 34:6 34:15 34:30 Leviticus 19:9 19:10 26:3-13 26:8 26:12 26:12 26:16 Numbers 3:1-4:49 10:36 12:6 13:22 23:19 24:13 30:3 32:34 Deutero”
Mark (Protestant academic) “Tyndale House on Mark 3:35: 3:35 Doing God’s will includes repentance from sin, faith in God, and following Jesus (1:15, 18, 20).”

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