Vincent's NT Word Studies
6. That (opwv). Connect with making mention.The communication of thy faith (h koinwnia thv pistewv sou). Koinwnia fellowship is often used in the active sense of impartation, as communication, contribution, almsgiving. So Rom. xv. 26; 2 Corinthians ix. 13; Heb. xiii. 16. This is the sense here: the active sympathy and charity growing out of your faith.
May become effectual (energhv). See on Jas. v. 16. This adjective, and the kindred ejnergew to work, be effectual, ejnerghma working, operation, and ejnergeia energy, power in exercise, are used in the New Testament only of superhuman power, good or evil. Compare Eph. i. 19; Matt. xiv. 2; Philip. ii. 13; 1 Cor. xii. 10; Heb. iv. 12. In the knowledge (en epignwsei). In denotes the sphere or element in which Philemon's charity will become effective. His liberality and love will result in perfect knowledge of God's good gifts. In the sphere of christian charity he will be helped to a full experience and appropriation of these. He that gives for Christ's sake becomes enriched in the knowledge of Christ. Knowledge is full, perfect knowledge; an element of Paul's prayer for his readers in all the four epistles of the captivity. In you. Read in us.
In Christ Jesus (eiv Criston Ihsoun). Connect with may become effectual, and render, as Rev., unto Christ; that is, unto Christ's glory.
Robertson's NT Word Studies
1:6 {That} (hopws). Rather than the more common final particle hina. Connected with mneian poioumenos. {The fellowship of thy faith} (h koinwnia ts pistews sou). Partnership like #Php 1:5 in (objective genitive, pistews). {Effectual} (energes). Common adjective, like energos (at work), in N.T. only here, #1Co 16:9; Heb 4:12. Papyri use energos of a mill in working order, of ploughed land, etc. {In you} (en humin). Some MSS. have en hemin (in us), itacism and common.