'It is I' in the Bible

And David said to God, Is it not I that commanded the people to be numbered? It is I that have sinned and done evil; but these sheep, what have they done? Let thy hand, I pray thee, Jehovah my God, be on me and on my father's house; but not on thy people, that they should be smitten.

And behold, in my affliction I have prepared for the house of Jehovah a hundred thousand talents of gold, and a thousand thousand talents of silver; and of brass and iron without weight, for it is in abundance; and timber and stone have I prepared; and thou shalt add to it.