'It is I' in the Bible

However he does not so reason, nor does his heart so think, but it is in his heart to destroy, and to cut off nations not a few.

And I will give thee the treasures of darkness, and hidden riches of secret places, that thou may know that it is I, LORD, who call thee by thy name, even the God of Israel.

Therefore my people shall know my name. Therefore they shall know in that day that I am he who speaks, Behold, it is I.

Thou were wearied with the length of thy way, yet thou did not say, It is in vain. Thou found a quickening of thy strength, therefore thou were not faint.