'In My Name' in the Bible

And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him.

But the prophet, which shall presume to speak a word in my name, which I have not commanded him to speak, or that shall speak in the name of other gods, even that prophet shall die.

whenever a prophet speaks in my name and the prediction is not fulfilled, then I have not spoken it; the prophet has presumed to speak it, so you need not fear him."