'Accuses' in the Bible

"Do not suppose that I will accuse you before the Father. The one who accuses you is Moses, in whom you have placed your hope.

Then I heard a loud voice in heaven saying, "The salvation and the power and the kingdom of our God, and the ruling authority of his Christ, have now come, because the accuser of our brothers and sisters, the one who accuses them day and night before our God, has been thrown down.