David
Psalm 44:3BSB·traditional attribution

For it was not by their sword that they took the land; their arm did not bring them victory. It was by Your right hand, Your arm, and the light of Your face, because You favored them.

John Calvin Reformed @genevareformer

PSALM 44 This psalm is divided into three principal parts. In the beginning of it the faithful record the infinite mercy of God towards his people, and the many tokens by which he had testified his fatherly love towards them. Then they complain that they do not now find that God is favorable towards them, as he had formerly been towards their fathers.

Commenting on Psalm 44:1-26

C.H. Spurgeon Reformed Baptist @princeofpreachers

For they got not the land in possession by their own sword. Behold how the Lord alone was exalted in bringing his people to the land which floweth with milk and honey! He, in his distinguishing grace, had put a difference between Canaan and Israel, and therefore, by his own effectual power, he wrought for his chosen and against their adversaries.

Matthew Henry Presbyterian @wholebiblehenry

Some observe that most of the psalms that are entitled Maschil - psalms of instruction, are sorrowful psalms; for afflictions give instructions, and sorrow of spirit opens the ear to them. Blessed is the man whom thou chastenest and teachest. In these verses the church, though now trampled upon, calls to remembrance the days of her triumph, of her triumph in God and over her enemies.

Commenting on Psalm 44:1-8