Acts 15:4
4. And when they were come to Jerusalem—This was Paul's THIRD VISIT TO JERUSALEM after his conversion, and on this occasion took place what is related in Ga 2:1-10. (See there).
were received of the church, and the apostles and elders—evidently at a meeting formally convened for this purpose: the deputation being one so influential, and from a church of such note. they declared all things that God had done with them—(See on Ac 14:14-27). 1 Corinthians 3:9
9. Translate, as the Greek collocation of words, and the emphasis on "God" thrice repeated, requires, "For (in proof that "each shall receive reward according to his own labor," namely, from God) it is of God that we are the fellow workers (laboring with, but under, and belonging to Him as His servants, 2Co 5:20; 6:1; compare Ac 15:4; see on 1Th 3:2) of God that ye are the field (or tillage), of God that ye are the building" [ALFORD]. "Building" is a new image introduced here, as suited better than that of husbandry, to set forth the different kinds of teaching and their results, which he is now about to discuss. "To edify" or "build up" the Church of Christ is similarly used (Eph 2:21, 22; 4:29).