Luke 9:30

Tertullian On Baptism

among the disciples, and the hope of the advent of the Lord indirectly pointed to, in that, at that time, when He had been received back into the heavens, the angels[200]

Constitutions of the Holy Apostles Book VI

For Moses himself, who was at once the lawgiver, and the high priest, and the prophet, and the king, and Elijah, the zealous follower of the prophets, were present at our Lord's transfiguration in the mountain,[109]