John Gills Exposition of the Bible Commentary - Isaiah 64:3
When thou didst terrible things, which we looked not for, thou camest down ,.... Referring to the wonderful things God did in Egypt, at the Red sea, and in the wilderness, and particularly at Mount Sinai, things that were unexpected, and not looked for; then the Lord came down, and made visible displays of his power and presence, especially on Mount Sinai; see Exodus 19:18 , the mountains flowed down at thy presence ; not Sinai only, but others also; Kimchi says Seir and Paran; Judges... read more
Matthew Henry's Complete Commentary - Isaiah 64:1-5
Here, I. The petition is that God would appear wonderfully for them now, Isa. 63:1, 2. Their case was represented in the close of the foregoing chapter as very sad and very hard, and in this case it was time to cry, ?Help, Lord; O that God would manifest his zeal and his strength!? They had prayed (Isa. 63:15) that God would look down from heaven; here they pray that he would come down to deliver them, as he had said, Exod. 3:8. 1. They desire that God would in his providence manifest himself... read more