And he said, The Lord came from Sinai, and rose up from Seir unto them; he shined forth from mount Paran, and he came with ten thousands of saints: from his right hand [went] a fiery law for them. (33:2)

--Psalms--

The chariots of God are twenty thousand, even thousands of angels: the Lord is among them, as in Sinai, in the holy place (68:17)

--Acts of the Apostles--

Who have received the law by the disposition of angels, and have not kept [it]. (7:53)

--Galations--

Wherefore then [serveth] the law? It was added because of transgressions, till the seed should come to whom the promise was made; [and it was] ordained by angels in the hand of a mediator. (3:19)

--Hebrews--

For if the word spoken by angels was stedfast, and every transgression and disobedience received a just recompense of reward; (2:2)