Acts 17:27-30
27 That they should seek the Lord, if haply they might feel after Him, and find Him, though He be not far from every one of us:
28 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.
29 Forasmuch then as we are the offspring of God, we ought not to think that the Godhead is like unto gold, or silver, or stone, graven by art and man's device.
30 And the times of this ignorance God winked at; but now commandeth all men every where to repent:
(KJV)
You're right Faithtransforms, Apostle Paul was using a philosophical concept some of the Greek philosophers had in speculating about man's relationship with God. The idea of "For in Him we live, and move, and have our being..." is about our spirit in relation to God's Spirit (John 4). Our being is not just fleshy material matter. God made us in His Image, from Which there is a deeper relationship between God and man than just our flesh.
But was Paul agreeing with the ideas of Pantheism? No, for he shows that in the Acts 17:29 verse. The Pantheist believes that God dwells in all matter, like even your electric toaster. Pantheism leads to worship of the creation instead of The Creator. Pantheism tends to deny the existence of a Personal Godhead.