From Steven: “Two other OT verses immediately came to mind highlighting the individual’s relationship with God over and above the family:
Psalm 27:10: "For my father and my mother have forsaken me, but the Lord will take me in.”
Isaiah 49:15: “Can a woman forget her nursing child, that she should have no compassion on the son of her womb? Even these may forget, yet I will not forget you.”
And Malachi 1:6 may also be relevant: “A son honors his father, and a servant his master. If then I am a father, where is my honor? And if I am a master, where is my fear? says the Lord of hosts to you, O priests, who despise my name. But you say, ‘How have we despised your name?’"
Those first two are interesting, in that they are deliberately about the failure of parents to abide by their God-given responsibilities. They don’t quite get at the same themes as I was trying to drive at, but you’re right: they’re close.