When You did awesome works that we did not expect, You came down, and the mountains trembled at Your presence.
Here, I. The petition is that God would appear wonderfully for them now, Isa 64:1, Isa 64:2. 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...
Commenting on Isaiah 64:1-5
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 Exo 19:18, the...
When--Supply from Isa 64:2, "As when." terrible things-- (Psa 65:5). we looked not for--far exceeding the expectation of any of our nation; unparalleled before (Exo 34:10; Psa 68:8). camest down--on Mount Sinai. mountains flowed--Repeated from Isa 64:1; they pray God to do the very same things for Israel now as in former ages.