I have offended, to wit, against thee, i.e. I have given thee occasion of warring against me, whereof I now repent. Or his ill success might make him think that he had sinned against God in this action, and might make him willing to submit to him, though God graciously prevented it. Of a talent of gold see on Exodus 25:39.
Related Commentaries of 2 Kings 18:14
2 Kings 18:14
14 And Hezekiah king of Judah sent to the king of Assyria to Lachish, saying, I have offended; return from me: that which thou puttest on me will I bear. And the king of Assyria appointed unto Hezekiah king of Judah three hundred talents of silver and thirty talents of gold.