Isaiah 45:2

“I will go before you and level the mountains; I will break down the gates of bronze and cut through the bars of iron.

Note DSS and LXX; MT level the terrain

I will go before thee, and make the crooked places straight: I will break in pieces the gates of brass, and cut in sunder the bars of iron:

“I will go before you and make the rough places smooth. I will break the doors of bronze in pieces and cut apart the bars of iron.

I will go before thee, and make the rough places smooth; I will break in pieces the doors of brass, and cut in sunder the bars of iron;