'Here Am I' in the Bible

And when he looked behind him, he saw me, and called unto me. And I answered, Here am I.

Now after this, David, questioning the Lord, said, Am I to go up into any of the towns of Judah? And the Lord said to him, Go up. And David said, Where am I to go? And he said, To Hebron.

but if he say thus, I have no delight in thee; behold, here am I, let him do to me as seemeth good unto him.