For in him we live, and move, and have our being; as certain also of your own poets have said, For we are also his offspring.
28. For in him. I grant that the apostles, according to the Hebrew phrase, do oftentimes take this preposition in for per, or by or through; but because this speech, that we live in God, hath greater force, and doth express more, I thought I would not change it; for I do not doubt but that Paul’s meaning is, that we be after a sort...
Paul's task here differs entirely from his preaching to Jews: they needed Christ proved by prophecy; these refined idolaters needed first to know there is one true Creator and God alone worthy of worship. He had to lay the foundation before he could build.
AI summary
Commenting on Acts 17:22-31
For in him we live, and move, and have our being,.... The natural life which men live is from God; and they are supported in it by him; and from him they have all the comforts and blessings of life; and all motions, whether external or internal, of body or of mind, are of God, and none of them are without the concourse of his...