Genesis 21:11
"And the thing was very grievous in Abraham’s sight because of his son."
Cross References (ranked by relevance)
Now no chastening for the present seemeth to be joyous, but grievous: nevertheless afterward it yieldeth the peaceable fruit of righteousness unto them which are exercised thereby.
And Abraham said unto God, O that Ishmael might live before thee!
He that loveth father or mother more than me is not worthy of me: and he that loveth son or daughter more than me is not worthy of me.
And the king was much moved, and went up to the chamber over the gate, and wept: and as he went, thus he said, O my son Absalom, my son, my son Absalom! would God I had died for thee, O Absalom, my son, my son!