Charles Ellicott Commentary Psalms 55:12

"For it was not an enemy that reproached me; Then I could have borne it: Neither was it he that hated me that did magnify himself against me; Then I would have hid myself from him:" — Psalms 55:12 (ASV)

For. —The ellipsis must be supplied from Psalms 55:9, I invoke destruction for, etc.

Then I could ... —Better, then (or else) I might bear it.