1Cor 14:17, Phili 4:6, 1Th 5:18 | JFB | e4.org | 17. givest thanks —The prayers of the synagogue were called "eulogies," because to each prayer was joined a thanksgiving. Hence the prayers of the Christian Church also were called blessings and giving of thanks. This illustrates . So the Kaddisch and Keduscha, the synagogue formulæ of "hallowing" the divine "name" and of prayer for the "coming of God's kingdom," answer to the Church's Lord's Prayer, repeated often and made the foundation on which the other prayers are built [TERTULLIAN , Prayer ].

‏ 1 Corinthians 14:17

17. givest thanks—The prayers of the synagogue were called "eulogies," because to each prayer was joined a thanksgiving. Hence the prayers of the Christian Church also were called blessings and giving of thanks. This illustrates Col 4:2; 1Th 5:17, 18. So the Kaddisch and Keduscha, the synagogue formulæ of "hallowing" the divine "name" and of prayer for the "coming of God's kingdom," answer to the Church's Lord's Prayer, repeated often and made the foundation on which the other prayers are built [TERTULLIAN, Prayer].

‏ Philippians 4:6

6. Translate, "Be anxious about nothing." Care and prayer are as mutually opposed as fire and water [BENGEL].

by prayer and supplication—Greek, "by the prayer and the supplication" appropriate to each case [ALFORD]. Prayer for blessings; and the general term. Supplication, to avert ills; a special term, suppliant entreaty (see on Eph 6:18).

thanksgiving—for every event, prosperity and affliction alike (1Th 5:18; Jas 5:13). The Philippians might remember Paul's example at Philippi when in the innermost prison (Ac 16:25). Thanksgiving gives effect to prayer (2Ch 20:21), and frees from anxious carefulness by making all God's dealings matter for praise, not merely for resignation, much less murmuring. "Peace" is the companion of "thanksgiving" (Php 4:7; Col 3:15).

let your requests be made known unto God—with generous, filial, unreserved confidence; not keeping aught back, as too great, or else too small, to bring before God, though you might feel so as to your fellow men. So Jacob, when fearing Esau (Ge 32:9-12); Hezekiah fearing Sennacherib (2Ki 19:14; Ps 37:5).

‏ 1 Thessalonians 5:18

18. In every thing—even what seems adverse: for nothing is really so (compare Ro 8:28; Eph 5:20). See Christ's example (Mt 15:36; 26:27; Lu 10:21; Joh 11:41).

this—That ye should "rejoice evermore, pray without ceasing, (and) in every thing give thanks," "is the will of God in Christ Jesus (as the Mediator and Revealer of that will, observed by those who are in Christ by faith, compare Php 3:14) concerning you." God's will is the believer's law. LACHMANN rightly reads commas at the end of the three precepts (1Th 5:16-18), making "this" refer to all three.