2 And he said, Jehovah came from Sinai, And rose up from Seir unto them; He shone forth from mount Paran, And he came from the myriads of the sanctuary; From his right hand [went forth] a law of fire for them.

Matthew Henry's Commentary on Deuteronomy 33:2

Commentary on Deuteronomy 33:1-5

(Read Deuteronomy 33:1-5)

To all his precepts, warnings, and prophecies, Moses added a solemn blessing. He begins with a description of the glorious appearances of God, in giving the law. His law works like fire. If received, it is melting, warming, purifying, and burns up the dross of corruption; if rejected, it hardens, sears, pains, and destroys. The Holy Spirit came down in cloven tongues, as of fire; for the gospel also is a fiery law. The law of God written in the heart, is a certain proof of the love of God shed abroad there: we must reckon His law one of the gifts of his grace.