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. Gesenius, instead of “flowed” here, and “flow” in Isa 64:1, translates from a different Hebrew root, “quake ... quaked”; but “fire” melts and causes to flow, rather than to quake (Isa 64:2).