Romans 11:25 Lest you be wise in your own sight, I do not want you to be unaware of this mystery, brothers: a partial hardening has come upon Israel, until the fullness of the Gentiles has come in. And in this way all Israel will be saved, as it is written, “The Deliverer will come from Zion, he will banish ungodliness from Jacob”; “and this will be my covenant with them when I take away their sins.”
2 Corinthians 3:14 But their minds were hardened. For to this day, when they read the old covenant, that same veil remains unlifted, because only through Christ is it taken away. Yes, to this day whenever Moses is read a veil lies over their hearts. But when one turns to the Lord, the veil is removed.
Romans 1:18 For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who by their unrighteousness suppress the truth. For what can be known about God is plain to them, because God has shown it to them. For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse. For although they knew God, they did not honor him as God or give thanks to him, but they became futile in their thinking, and their foolish hearts were darkened.
Israel is a chosen people, blessed by God, and used by God. Great promises were given to them. Great miracles and acts of power were shown to them. Great mercies were given to them. Jesus, the man, entered into this world through them. Jesus, the Son of God, came to redeem them and save them from the curse of death. Jesus’s ministry was first to them. Jesus did many signs and wonders among them. Jesus was rejected by them. The message of the Gospel was proclaimed through them. After Jesus’s resurrection, they rejected Him again. Paul is explaining that this mystery of God is all part of God’s plan and purpose. At some point in the near future Jesus Christ will return and whatever veil has been placed over their eyes of understanding will be lifted and they will come to worship, honor, and glorify Jesus Christ. This veil has not been placed over (gentile) our eyes of understanding. No, the Gospel has been made clear and all of creation bears witness to us that Jesus Christ is the Son of God and that out of God’s grace, love, and mercy He calls out to all of mankind to believe in/on Jesus Christ. There is no hardening or darkening or veil over us. We clearly see and, thereby, clearly reject or accept/receive this precious gift of forgiveness, salvation, and redemption through Jesus Christ. We have no excuse. When we die and are immediately ushered into eternity and stand before Jesus on the Day of Judgment, we will have no grounds to stand on. A person’s receipt/acceptance or rejection of Jesus Christ in this life determine one’s destiny for eternity in heaven or eternity in hell. There is no veil that blocks our understanding of the gift of God through Jesus Christ. It is out of a pure rejection of God’s grace, mercy, and love whereby we are judged guilty. God gave us His written Word, sent His Son to pay the price of sin, and did many witnessed and recorded signs, wonders, and miracles so that we would see and know of His love for us. This is made clear in, “For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life. For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him. Whoever believes in him is not condemned, but whoever does not believe is condemned already, because he has not believed in the name of the only Son of God.” We are without excuse when we reject this great and precious gift of grace, mercy, and love.