'Angel's' in the Bible

And the smoke of the incense, which came with the prayers of the saints, ascended up before God out of the angel's hand.

And I took the little book out of the angel's hand, and ate it up; and it was in my mouth sweet as honey: and as soon as I had eaten it, my belly was bitter.

And he measured its wall, a hundred and forty-four cubits, a man's measure, that is, the angel's.