Adam Clarke on Deuteronomy 33:3

Yea, he loved the people - This is the inference which Moses makes from those glorious appearances, that God truly loved the people; and that all his saints, קדשיו kedoshaiv, the people whom he had consecrated to himself, were under his especial benediction; and that in order to make them a holy nation, God had displayed his glory on Mount Sinai, where they had fallen prostrate at his feet with the humblest adoration, sincerely promising the most affectionate obedience; and that God had there commanded them a law which was to be the possession and inheritance of the children of Jacob, Deu 33:4. And to crown the whole, he had not only blessed them as their lawgiver, but had also vouchsafed to be their king, Deu 33:5.

Dr. Kennicott proposes to translate the whole five verses thus: -