Make you perfect in every good work to do his will,.... The Alexandrian copy reads, "in every good work and word"; as in 2Th 2:17 every good work is to be done: a good work is what is done in obedience to the command of God, and in faith, and from a principle of love, in the name and strength of Christ, and with a view to the glory of God; and every such work should be diligently attended to; such as concern God, and are of a moral nature, or of positive institution; and such as concern each other, whether as men or Christians: and the will of God is the rule of every good work, both as to matter and manner; whatever is not agreeably to the revealed will of God, let it have ever such a show of religion and holiness in it, it is not a good work; continuance in the performance of good works, and the perfection of them, are things to be desired of God; it requires grace to perform good works, and more grace to abound in them, and to keep men from being weary of well doing; and though the best of works are imperfect, yet perfection in them is desirable, and it is God alone that can make the saints perfect in any sense; see 1Pe 5:10.
The Arabic and Ethiopic versions render it, "strengthen you", or "confirm you"; saints need to be strengthened with spiritual strength, to perform good works; for they are weak and feeble, and unable of themselves to do anything spiritually good; without Christ they can do nothing, but through him strengthening them, they can do all things; and they have need to be confirmed in them, that they are the will of God, and that it is their duty to regard them.
The Vulgate Latin version renders it, "fit you": men are naturally unfit for good works; in order to do them aright, it is necessary that they should have knowledge of the will of God; that they be regenerated and created in Christ; that they be sanctified and cleansed, and so meet for the master's use; that they have the Spirit of God, and strength from Christ; and that they be believers in him: nor is there always a fitness in saints themselves, or a readiness to good works, only when God gives both will and power to do them; wherefore such a petition as this is very proper and pertinent; another follows, or the same carried on, and more largely expressed; though it rather seems to be a distinct one, and that in order to the former:working in you that which is wellpleasing in his sight, through Jesus Christ; the good work of grace being necessary to the performance of good works; nor can any man do a good work well, unless he has the good work of grace wrought in him: grace is a work not of man, but of God; it is an internal work, something in a man's heart, and not anything without him, or done by him; and it is a gradual and progressive work; it is carried on by degrees, and is not yet perfect, though it will be.