Where is "Bend yourselves, yea, bend ye, O nation not desired," found in the Bible?

This verse is found in Zephaniah, chapter 2, verse 1 of the Young's Literal Translation (YLT) Bible translation.

Zephaniah 2:1 (YLT) - Bible Verse

Bend yourselves, yea, bend ye, O nation not desired,

And Moses said, I will turn aside now, and see this great sight, why the bush is not burnt.