'It's' in the Bible

"Men of Judea and everyone living in Jerusalem! You must understand something, so pay close attention to my words. These men are not drunk as you suppose, for it's only nine o'clock in the morning.

They said, "What should we do with these men? For it's obvious to everybody living in Jerusalem that an unmistakable sign has been done by them, and we cannot deny it.

However, if it's from God, you won't be able to stop them, and you may even discover that you are fighting against God!"

The other people told her, "You're out of your mind!" But she kept insisting that it was so. Then they said, "It's his angel."