'It is I' in the Bible

As to the porch on the front of the temple of the house, twenty cubits is its length on the front of the breadth of the house; ten by the cubit is its breadth on the front of the house;

The lowest couch, five by the cubit is its breadth; and the middle, six by the cubit is its breadth; and the third, seven by the cubit is its breadth, for withdrawings he hath put to the house round about, without -- not to lay hold on the walls of the house.

And he maketh the molten sea, ten by the cubit from its edge unto its edge; it is round all about, and five by the cubit is its height, and a line of thirty by the cubit doth compass it round about;

Famine -- when it is in the land; pestilence -- when it is; blasting, mildew, locust; caterpillar -- when it is; when its enemy hath distressed it in the land in its gates, any plague, any sickness, --

And he answered him, It is I: go, tell thy lord, Behold, Elijah is here .