Open thy mouth wide, &c.— i.e. "I will satisfy thy desires, be they ever so large. Be faithful to me, and I will fill thee with blessings in profusion." The Chaldee reads, Open thy mouth to the words of the law, and I will fill it with every thing which is good. Houbigant renders it, Who have enlarged thy mouth, and filled it.
Related Commentaries of Psalms 81:10
Psalms 81:10
10 I am the LORD thy God, which brought thee out of the land of Egypt: open thy mouth wide, and I will fill it.