We ought not to think (ouk opeilomen nomizein). It is a logical conclusion (oun, therefore) from the very language of Aratus and Cleanthes. That the Godhead is like (to qeion einai omoion). Infinitive with accusative of general reference in indirect discourse. To qeion is strictly "the divine" nature like qeioth ( Romans 1:20 ) rather than like qeoth ( Colossians 2:9 ). Paul may have used to qeion here to get back behind all their notions of various gods to the real nature of God. The Athenians may even have used the term themselves. After omoio (like) the associative instrumental case is used as with cruswi, argurwi, liqwi. Graven by art and device of man (caragmati tecnh kai enqumhsew anqrwpou). Apposition with preceding and so caragmati in associative instrumental case. Literally, graven work or sculpture from carassw, to engrave, old word, but here alone in N.T. outside of Revelation (the mark of the beast). Graven work of art (tecnh) or external craft, and of thought or device (enqumhsew) or internal conception of man.