'Guard' in the Bible

So he drove the man out, and placed cherubim east of the garden of Eden, and {a flaming, turning sword} to guard the way to the tree of life.

And the Midianites sold him in Egypt to Potiphar, a court official of Pharaoh, a commander of the imperial guard.

Now Joseph had been brought down to Egypt, and Potiphar, a court official of Pharaoh, commander of the guard, an Egyptian, bought him from the hand of the Ishmaelites who had brought him down there.

And he put them in custody in the house of the chief of the guard, into the prison where Joseph was confined.

And the chief of the guard appointed Joseph [to be] with them, and he attended them. And they were in custody {many days}.

Pharaoh was angry with his servants, and he put me and the chief baker in the custody of the house of the chief of the guard.

And there with us [was] a young man, a Hebrew servant of the chief of the guard, and we told him [the dream], and he interpreted our dreams for us, each according to his dream he interpreted.