What does Deuteronomy 33:2 mean?

He said: ‘The Lord came from Sinai, shining like the sunrise from Seir, blazing out from Mount Paran. He came with thousands of holy ones, fire flashing at his right hand. Deuteronomy 33:2 - Modern Text Bible

(Moses describes God’s majestic appearance when he revealed himself to Israel, surrounded by heavenly beings.)