'It is I' in the Bible

And I will stir me up a faithful priest that shall do as it is in mine heart and in my mind. And I will build him a sure house. And he shall walk before mine anointed forever.

For, as Yahweh lives, who saves Israel, though it is in Jonathan my son, he shall surely die." But there was not a man among all the people who answered him.

Then Saul said to the Lord, the God of Israel, Why have you not given me an answer today? If the sin is in me or in Jonathan my son, O Lord God of Israel, give Urim, and if it is in your people Israel, give Thummim. And by the decision of the Lord, Saul and Jonathan were marked out, and the people went free.