Read Isaiah 63:16 Using Other Translations
Doubtless thou art our father, though Abraham be ignorant of us, and Israel acknowledge us not: thou, O LORD, art our father, our redeemer; thy name is from everlasting.
For you are our Father, though Abraham does not know us, and Israel does not acknowledge us; you, O LORD, are our Father, our Redeemer from of old is your name.
Surely you are still our Father! Even if Abraham and Jacob would disown us, LORD, you would still be our Father. You are our Redeemer from ages past.