Jewish Publication Society of America Version (JPS1917) - Isaiah 64:3 >

(64-2) When Thou didst tremendous things which we looked not for — Oh that Thou wouldest come down, that the mountains might quake at Thy presence! —

King James Version (KJV) - Isaiah 64:3 >

When thou didst terrible things [which] we looked not for, thou camest down, the mountains flowed down at thy presence.

Berean Study Bible (BSB) - Isaiah 64:3 >

When You did awesome works that we did not expect, You came down, and the mountains trembled at Your presence.