John Calvin Reformed @genevareformer

3 Because I will publish the name of the Lord. He signifies by these words that, if there were any spark of piety in the Israelites, it must be manifested by their welcoming this address, wherein the majesty of God shines forth. The first clause of the verse, therefore, stands last in order, since it is an assignment of a reason for the other.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. A commanding preface or introduction to this song of Moses, Deu 32:1, Deu 32:2. He begins, 1. With a solemn appeal to heaven and earth concerning the truth and importance of what he was about to say, and the justice of the divine proceedings against a rebellious and backsliding people, for he had said (Deu 31:28) that he would in this song...

Commenting on Deuteronomy 32:1-6

John Gill Reformed Baptist @doctorgill

Because I will publish the name of the Lord,.... Not call on his name, as some, nor call to the heaven and earth in his name, as others, but proclaim his name, even the same that was proclaimed before Moses, Exo 34:6; and this is to be understood, not of Jehovah the Father, nor of Jehovah the Spirit, but of Jehovah the Son, the rock...