But the LORD's messenger called to him from heaven, "Abraham, Abraham!" "Here I am," he answered. "Do not lay your hand on the boy," said the messenger. "Do not do the least thing to him. I know now how devoted you are to God, since you did not withhold from me your own beloved son." (Gen 22:1b-19)
https://bible.usccb.org/bible/readings/070623.cfm
One of the more troubling passages in the Scriptures to be sure, yet an important part of the Abraham story and in the story of Salvation as the Exultet of the Easter Vigil will attest when it sings: “O love, O charity beyond all telling, to ransom a slave you gave away your Son!” Today is the feast day of our own Sister Maria Goretti Weldon, RSM. Ad multos annos!