IMHO
The faith of Abraham was that in his seed, singular, the Christ, the Gentiles and or all the nation of the earth shall be blessed.
The sinless Jesus dying and being raised from the dead was the faith and grace by which the Father gave the Son the promise of the Holy Spirit to shed on man for assurance. Acts 2:32,33 This Jesus hath God raised up, whereof we all are witnesses. Therefore being by the right hand of God exalted, and having received of the Father the promise of the Holy Spirit, he hath shed forth this, which ye now see and hear.
That blessing comes through the giving of the Holy Spirit of promise.
How are you blessed? 2 Cor 5:5,6 Now he that hath wrought us for the selfsame thing is God, who also hath given unto us the earnest of the Spirit. Therefore we are always confident, knowing that, whilst we are at home in the body, we are absent from the Lord:
The Holy Spirit gives us assurance, confidence of being wrought with the selfsame thing, being born again, with our house which is from heaven.
We. that is we who have the Spirit, know as long as we are at home in the body of flesh we were born with we will be absent from the LORD.
Jesus is the only man born of woman who has received regeneration.
Matt 19:28 we will follow Jesus in regeneration when he comes to sit in the throne of his glory.
And Jesus said to them, 'Verily I say to you, that ye who did follow me in the regeneration, when the Son of Man may sit upon a throne of his glory, shall sit -- ye also -- upon twelve thrones, judging the twelve tribes of Israel; YLT