Albert Barnes Commentary Psalms 136:11

"And brought out Israel from among them; For his lovingkindness [endureth] for ever;" — Psalms 136:11 (ASV)

And brought Israel out from among them - From the land of Egypt. By all the wonders manifested in their deliverance, and in conducting them out of the land so that they should escape from their pursuers.

For his mercy ... - His mercy in this respect was to be measured by all that there was of power in conducting them out in safety, and by the results of it.