(10) For his mercy.--Here the refrain, after the mention of the destruction of the Egyptian first-born, and subsequently after that of war and slaughter, sounds harsh to Christian ears. But the word mercy (khesed) in the Hebrew motto implies distinctly covenant grace, that special favour of Jehovah in which the heathen did not share, and which was often most signally shown in their destruction.

Verse 10. - To him that smote Egypt in their firstborn. The parallelism with Psalm 135, here becomes very close, and so continues till the end of ver. 22. Five verses, however, are expanded into thirteen. For his mercy, etc.

136:10-22 The great things God did for Israel, when he brought them out of Egypt, were mercies which endured long to them; and our redemption by Christ, which was typified thereby, endures for ever. It is good to enter into the history of God's favours, and in each to observe, and own, that his mercy endureth for ever. He put them in possession of a good land; it was a figure of the mercy of our Lord Jesus Christ.To him that smote Egypt in their firstborn,.... In a tender part, in the dear part of themselves, in their sons and heirs, and who were to inherit their lands and estates, and perpetuate their names; this was an act of justice for using ill the Lord's firstborn, the people of Israel, slaying their sons, and refusing to let them go, Exodus 1:13; and yet there was mercy in it, for which thanks were to be given to God;

for his mercy endureth for ever; the Israelites, in a very merciful manner, were distinguished by the blood sprinkled on their door posts, when the destroying angel passed through the land of Egypt to destroy their firstborn; and when they were destroyed, it was owing to the kind providence of God that the Egyptians did not rise as one man to cut off the Israelites in vengeance; and yet not a dog was suffered to move his tongue against them when the dismal cry was made; yea, this was the means of their deliverance, which could not be obtained by all the other plagues; but now they not only bid them go, but were urgent upon them to be gone, Exodus 11:5.