He is your praise. He is your God, who has done for you these great and terrifying things that your eyes have seen.
21. He is thy praise. That he may the more easily persuade his countrymen that nothing is better, or more desirable for them than to devote themselves to God’s service, Moses reminds them that they have nothing to boast of out of Him; as if he had said, that they were happy in this one respect, that God had taken them under His charge; but...
Here is a most pathetic exhortation to obedience, inferred from the premises, and urged with very powerful arguments and a great deal of persuasive rhetoric. Moses brings it in like an orator, with an appeal to his auditors And now, Israel, what doth the Lord thy God require of thee? Deu 10:12. Ask what he requires; as David (Psa 116:12), What shall I render?
Commenting on Deuteronomy 10:12-22
He is thy praise,.... The object and matter of it, who deserves the praises of all his creatures, because of his perfections, works, and blessings of goodness; for all mercies temporal and spiritual come from him, and therefore he is greatly to be praised for them: praise is his due, and it is comely in his people to give it to him; see Jer 17:14.