'Itself' in the Bible

And having passed through a first and second guard, they came to the iron gate which leads into the city, which opened to them of itself; and going forth they went down one street, and immediately the angel left him.

But the word of God grew and spread itself.

And falling into a place where two seas met they ran the ship aground, and the prow having stuck itself fast remained unmoved, but the stern was broken by the force of the waves.