Israel was chosen before they existed due to God’s covenant with the Fathers, sir.
No one has ever been blessed with the blessings listed in Ephesians 1 before they were chosen. And that includes forgiveness and sealing of the Spirit. All of these things spring from/are according to what Ephesians 1:4 states.
That is what according means. All of these things, forgiveness, redemption, reconciliation, sealing, adoption, inheritance, all are ACCORDING TO whatEphesians 1:4 says.
Look up according.