because.

Genesis 17:18
And Abraham said to God, "O that Ishmael might live under Your blessing!"

Genesis 22:1, 2
Some time later God tested Abraham and said to him, "Abraham!" "Here I am, " he answered. . . .

2 Samuel 18:33
The king was shaken and went up to the gate chamber and wept. And as he walked, he cried out, "O my son Absalom! My son, my son Absalom! If only I had died instead of you, O Absalom, my son, my son!"

Matthew 10:37
Anyone who loves his father or mother more than Me is not worthy of Me; anyone who loves his son or daughter more than Me is not worthy of Me;

Hebrews 12:11
No discipline seems enjoyable at the time, but painful. Later on, however, it yields a peaceful harvest of righteousness to those who have been trained by it.