'Age' in the Bible

Where is your wise man? Where your expounder of the Law? Where your investigator of the questions of this present age? Has not God shown the world's wisdom to be utter foolishness?

Yet when we are among mature believers we do speak words of wisdom; a wisdom not belonging, however, to the present age nor to the leaders of the present age who are soon to pass away.

a wisdom which not one of the leaders of the present age possesses, for if they had possessed it, they would never have crucified the Lord of glory.

Let no one deceive himself. If any man imagines that he is wise, compared with the rest of you, with the wisdom of the present age, let him become "foolish" so that he may be wise.