The Lord demands your very best,
The very thing you think you cannot give.
He puts your claims all to the test;
Demands you die--that rising you may live.
And if you trust him, you will find
His goodness far exceeds your highest thought.
He's more than tender, more than kind,
But never, ever can this God be bought.
After these things God tested Abraham and said to him, “Abraham!” And he said, “Here I am.”
He said, “Take your son, your only son Isaac, whom you love, and go to the land of Moriah, and offer him there as a burnt offering on one of the mountains of which I shall tell you.” (Genesis 22:1-2 ESV. Read the whole chapter.)