Albert Barnes Commentary Judges 20:43

"They inclosed the Benjamites round about, [and] chased them, [and] trod them down at [their] resting-place, as far as over against Gibeah toward the sunrising." — Judges 20:43 (ASV)

The language and construction of this verse are poetical; it seems to be an extract from a song and to describe, in the language of poetry, the same event that the preceding verse described in prose.

With ease – Or “rest” (Numbers 10:33; Psalms 95:11). The expression is very obscure. The margin takes it as the name of a place.