Isaiah
Isaiah 41:8ESV·traditional attribution

But you, Israel, my servant, Jacob, whom I have chosen, the offspring of Abraham, my friend;

John Calvin Reformed @genevareformer

8. But thou, Israel, art my servant. He now shews how unreasonable it is to confound the people of Israel with the heathen nations, though all have lifted up a standard and agree in error, and though the whole world be abandoned to impostures; for, since by a calling of free grace God had chosen and set them apart, they ought not to have given...

Matthew Henry Presbyterian @wholebiblehenry

That particular instance of God's care for his people Israel in raising up Cyrus to be their deliverer is here insisted upon as a great proof both of his sovereignty above all idols and of his power to protect his people. Here is, I. A general challenge to the worshippers and admirers of idols to make good their pretensions, in competition with God and opposition to him, Isa 41:1.

Commenting on Isaiah 41:1-9

John Gill Reformed Baptist @doctorgill

But thou, Israel, art my servant,.... As the great spread and success of the Gospel could not fail of drawing the resentment of the idolatrous Heathens on those who embraced and professed it, and by whom they were grievously persecuted under the Roman emperors; wherefore, to support them under these trials, the Lord speaks these and the following comfortable words unto them; for not carnal...