mercies - The plural intensifies the force; mercy manifold and exhibited in countless ways. As it is humbling to recollect “righteousness belongeth unto God,” so it is comforting, that “mercies belong to the Lord our God.”
though we have rebelled - rather, “since,” etc. [Vulgate], (Psa 25:11). Our punishment is not inconsistent with His “mercies,” since we have rebelled against Him.