David
Psalm 136:19BSB·traditional attribution

Sihon king of the Amorites His loving devotion endures forever.

John Calvin Reformed @genevareformer

PSALM 136 The Psalmist reminds the Lord’s people, that unless they were assiduous in his praises, they were chargeable with defrauding him of what was justly due to him for his benefits. And, in mentioning each benefit, he takes particular notice of the mercy of God, to teach us how necessary it is to the proper celebration of his praises that we own everything which...

Commenting on Psalm 136:1-26

C.H. Spurgeon Reformed Baptist @princeofpreachers

Sihon king of the Amorites. Let the name be mentioned that the mercy may be the better remembered. Sihon smote Moab, but he could not smite Israel, for the Lord smote him. He was valiant and powerful, so as to be both great and famous; but as he wilfully refused to give a peaceful passage to the Israelites, and fought against them in malice, there...

Matthew Henry Presbyterian @wholebiblehenry

The great things God for Israel, when he first formed them into a people, and set up his kingdom among them, are here mentioned, as often elsewhere in the psalms, as instances both of the power of God and of the particular kindness he had for Israel. See Psa 135:8, etc. 1. He brought them out of Egypt, Psa 136:10-12.

Commenting on Psalm 136:10-22