After leaving this place they saw a little insignificant country near them. And as they were landing there, the harbour was filled with demons in the shapes of dwarfs and leprechauns opposing them, whose faces were black as coal.
—Life of Brendan of Clonfort, Bethada Náem NÉrenn, Volume 2, p. 63

The devil took him to a very high mountain and showed him all the kingdoms of the world and their splendor. “All this I will give you,” he said, “if you will bow down and worship me.” Jesus said to him, “Away from me, Satan! For it is written: ‘Worship the Lord your God, and serve him only.’” Then the devil left him, and angels came and attended him.
–Matthew 4:8-11