If you are already saved and born again that puts the cart before the horse. I'd be more convinced if you gave your own testimony where you are totally depraved calling on the Lord to be saved. Instead as you said you have to be regenerated/SAVED FIRST.
not so, the person has to also be sealed, which happens after they believe
Thing is though which is true, all God makes born again, will believe and then be sealed.
People think born again means saved, but that is not the complete story is it.
Ephesians 1
11 In him we were also chosen, having been predestined according to the plan of him who works out everything in conformity with the purpose of his will, 12 in order that we, who were the first to put our hope in Christ, might be for the praise of his glory.
13 And you also were included in Christ when you heard the message of truth, the gospel of your salvation. When you believed, you were marked in him with a seal, the promised Holy Spirit, 14 who is a deposit guaranteeing our inheritance until the redemption of those who are God’s possession—to the praise of his glory.