Charles Ellicott Commentary Deuteronomy 32:1

"Give ear, ye heavens, and I will speak; And let the earth hear the words of my mouth." — Deuteronomy 32:1 (ASV)

Give ear, O ye heavens, and I will speak; and hear, O earth, the words of my mouth. — Compare the opening of Isaiah 1:2, which is almost identical, except that the two words for “hearing” are transposed.