Deuteronomy 33:2 He said, "The LORD came from Sinai, And dawned on them from Seir; He shone forth from Mount Paran, And He came from the midst of ten thousand holy ones; At His right hand there was flashing lightning for them.

Acts 7:38 "This is the one who was in the congregation in the wilderness together with the angel who was speaking to him on Mount Sinai, and who was with our fathers; and he received living oracles to pass on to you.

Galatians 3:19 Why the Law then? It was added because of transgressions, having been ordained through angels by the agency of a mediator, until the seed would come to whom the promise had been made.

Hebrews 2:2 For if the word spoken through angels proved unalterable, and every transgression and disobedience received a just penalty, (NASB ©1995)