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The Heart as Seat of Affections in Christian Theology

The heart, in biblical understanding, is considered the central core of human existence, encompassing not only spiritual activity but also all aspects of life [1]. It is often used interchangeably with "soul" in certain contexts, such as Deuteronomy 6:5 and Matthew 22:37, though this is not universally the case [1]. The heart is depicted as the "home of the personal life," determining a person's character, whether wise, pure, upright, righteous, pious, or good [1].

Affections, defined as feelings or emotions, are closely linked to the heart [2]. The Bible speaks of "vile affections" (Romans 1:26) and "inordinate affection" (Colossians 3:5), while also exhorting believers to set their affections on "things above" (Colossians 3:2) [2]. There is a distinction between natural affections and spiritual or gracious affections [2].

Scripture emphasizes that affections should be supremely directed toward God (Deuteronomy 6:3; Mark 12:30) [3]. This includes setting affections upon God's commandments (Psalm 19:8-10; 119:20, 97, 103, 167), His house and worship (1 Chronicles 29:3; Psalm 26:8; 27:4; 84:1,2), and His people (Psalm 16:3; Romans 12:10; 2 Corinthians 7:13-15; 1 Thessalonians 2:8) [3]. Heavenly things are also a proper object for affections (Colossians 3:1,2) [3]. Christ claims the primary place in one's affections (Matthew 10:37; Luke 14:26), and communion with Him can enkindle these affections (Luke 24:32) [3].

The Old Testament frequently portrays the heart as the seat of emotions, thinking, and reasoning [12]. For instance, Genesis 6:5, Deuteronomy 4:29, and Psalm 131:1 illustrate this understanding [12]. The heart plays a critical role in the struggle between wisdom and foolishness, and between righteousness and evil, as seen in passages like Matthew 5:8, 13:15, John 12:40, and Romans 6:17 [12].

Other biblical terms are sometimes used metaphorically to refer to the seat of affections. The "reins," or kidneys, are considered the supposed seat of desires and affections and are often mentioned alongside the heart to denote the entire moral constitution of a person (Psalm 7:9; 16:7; 26:2; 139:13; Jeremiah 17:10) [5]. Similarly, the "belly" can symbolically represent the heart and the seat of carnal affections (Proverbs 18:8; 20:27; 22:18; Titus 1:12; Philippians 3:19; Romans 16:18) [4].

The indwelling of Christ is described as taking place "in your hearts through faith" (Ephesians 3:17), leading believers to be "rooted and grounded in love" [6]. John Calvin emphasized that Christ's dwelling should not merely be superficial, but the heart is His proper seat, opened by faith [7]. Adam Clarke, a Methodist commentator, noted that without love for God and humanity, there can be no stability in Christian faith, as love produces both solidity and continuance [10]. He further stated that one filled with love is "unblamable in holiness" because they partake in the divine nature, as God is love [10].

The prayer that God would guide or "make straight" hearts is an Old Testament expression (1 Chronicles 29:18; Proverbs 23:19), reflecting the expectation that Christians should love as God loves and practice patient endurance as Christ did [11]. The concept of the heart as a dwelling place for the divine is also reflected in rabbinic thought, which likens the heart to God's sanctuary where the Divine glory dwells [9]. Christian love, as described in 1 Corinthians 13:4-7, emphasizes a willingness to prioritize the good of others over one's own desires [8].

Sources

  1. Easton's Bible Dictionary “Easton's Bible Dictionary: Heart — According to the Bible, the heart is the centre not only of spiritual activity, but of all the operations of human life. "Heart" and "soul" are often used interchangeably (Deut. 6:5; 26:16; comp. Matt. 22:37; Mark 12:30, 33), but this is not generally the case. The heart is the "home of the personal life," and hence a man is designated, according to his heart, wise (1 Kings 3:12, etc.), pure (Ps. 24:4; Matt. 5:8, etc.), upright and righteous (Gen. 20:5, 6; Ps. 11:2; 78:72), pious and good (Luke 8:15), etc. In these and such passages the word "soul" could not ”
  2. Easton's Bible Dictionary “Easton's Bible Dictionary: Affection — Feeling or emotion. Mention is made of "vile affections" (Rom. 1:26) and "inordinate affection" (Col. 3:5). Christians are exhorted to set their affections on things above (Col. 3:2). There is a distinction between natural and spiritual or gracious affections (Ezek. 33:32).”
  3. Torrey's Topical Textbook “Torrey's Topical Textbook: Affections, The — Should be supremely set upon God -- De 6:3; Mr 12:30. Should be set Upon the commandments of God. -- Ps 19:8-10; 119:20,97,103,167. Upon the house and worship of God. -- 1Ch 29:3; Ps 26:8; 27:4; 84:1,2. Upon the people of God. -- Ps 16:3; Ro 12:10; 2Co 7:13-15; 1Th 2:8. Upon heavenly things. -- Col 3:1,2. Should be zealously engaged for God -- Ps 69:9; 119:139; Ga 4:18. Christ claims the first place in -- Mt 10:37; Lu 14:26. Enkindled by communion with Christ -- Lu 24:32. Blessedness of making God the object of -- Ps 91:14. Should not grow cold -- P”
  4. Easton's Bible Dictionary “Easton's Bible Dictionary: Belly — The seat of the carnal affections (Titus 1:12; Phil. 3:19; Rom. 16:18). The word is used symbolically for the heart (Prov. 18:8; 20:27; 22:18, marg.). The "belly of hell" signifies the grave or underworld (Jonah 2:2).”
  5. Easton's Bible Dictionary “Easton's Bible Dictionary: Reins — The kidneys, the supposed seat of the desires and affections; used metaphorically for "heart." The "reins" and the "heart" are often mentioned together, as denoting the whole moral constitution of man (Ps. 7:9; 16:7; 26:2; 139:13; Jer. 17:10, etc.).”
  6. Ephesians “Ephesians 3:17 (BBE) — So that Christ may have his place in your hearts through faith; and that you, being rooted and based in love,”
  7. Ephesians (Presbyterian) “Jamieson, Fausset & Brown on Ephesians 3:17: That--So that. dwell--abidingly make His abode (Joh 14:23). Where the Spirit is there Christ is (Joh 14:16, Joh 14:18). by faith--Greek, "through faith," which opens the door of the heart to Jesus (Joh 3:20). It is not enough that He be on the tongue, or flit through the brain: the heart is His proper seat [CALVIN]. "You being rooted and grounded in love" (compare Eph 3:19), is in the Greek connected with this clause, not with the clause, "that ye may be able to comprehend." "Rooted" is an image from a tree; "grounded" (Greek, "founder," "having”
  8. 1 Corinthians (Protestant academic) “Tyndale House on 1 Corinthians 13:4: 13:4-7 This description of Christian love emphasizes the willingness to give up one’s own desires for the good of others (see also 8:1–10:33; Rom 5:6-8; 15:3; 2 Cor 8:9; Phil 2:4-8).”
  9. Exodus (Methodist/Wesleyan) “Adam Clarke on Exodus 25:22: And there I will meet with thee - That is, over the mercy-seat, between the cherubim. In this place God chose to give the most especial manifestations of himself; here the Divine glory was to be seen; and here Moses was to come in order to consult Jehovah, relative to the management of the people. Ainsworth has remarked that the rabbins say, "The heart of man may be likened to God's sanctuary; for as, in the sanctuary, the shechinah or Divine glory dwelt, because there were the ark, the tables, and the cherubim; so, in the heart of man, it is meet that a place be m”
  10. 1 Thessalonians (Methodist/Wesleyan) “Adam Clarke on 1 Thessalonians 3:13: To the end he may establish your hearts - Without love to God and man, there can be no establishment in the religion of Christ. It is love that produces both solidity and continuance. And, as love is the fulfilling of the law, he who is filled with love is unblamable in holiness: for he who has the love of God in him is a partaker of the Divine nature, for God is love. At the coming of our Lord - God is coming to judge the world; every hour that passes on in the general lapse of time is advancing his approach; whatsoever he does is in reference to this grea”
  11. 2 Thessalonians (Protestant academic) “Tyndale House on 2 Thessalonians 3:5: 3:5 The prayer that God would lead (literally make straight) their hearts reflects an Old Testament expression (1 Chr 29:18; Prov 23:19). Christians are expected to love as God loves and practice patient endurance as Christ endured.”
  12. Proverbs (Protestant academic) “Tyndale House on Proverbs 4:23: 4:23 In the Old Testament, the heart represents the center of emotions, thinking, and reasoning (e.g., Gen 6:5; Deut 4:29; Ps 131:1). The heart is crucial in the battle between wisdom and foolishness, between righteousness and evil (see Matt 5:8; 13:15; John 12:40; Rom 6:17).”
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