If we are going to speak biblically - then let us speak biblically:

Isaiah the prophet foretold that the Messiah would suffer and die for the sins of the world:

“But He was wounded for our transgressions,
He was bruised for our iniquities;
The chastisement for our peace was upon Him,
And by His stripes we are healed.
All we like sheep have gone astray…
And the Lord has laid on Him the iniquity of us all.”
   •   Isaiah 53:5–6 (NKJV)

“Yet it pleased the Lord to bruise Him…
When You make His soul an offering for sin…”
   •   Isaiah 53:10 (NKJV)

The suffering of the Messiah was not accidental. It was ordained.

Jesus Himself declared:

“For I have come down from heaven, not to do My own will, but the will of Him who sent Me.”
   •   John 6:38 (NKJV)

“No one takes it from Me, but I lay it down of Myself. I have power to lay it down, and I have power to take it again.”
   •   John 10:18 (NKJV)

The cross was voluntary obedience to the Father.
It was not forced. It was not stolen. It was laid down.

And the apostle Paul, speaking of unbelieving Israel, wrote:

“Concerning the gospel they are enemies for your sake, but concerning the election they are beloved for the sake of the fathers. For the gifts and the calling of God are irrevocable.”
   •   Romans 11:28–29 (NKJV)

Irrevocable - not temporary.
Irrevocable - not transferable.
Irrevocable - not replaced.

So when someone claiming to be a Christian says:
   •   “The Jews killed Jesus.”
   •   “God replaced them.”
   •   “They are no longer His people.”

That is not the testimony of Scripture.

Peter preached in Jerusalem:

“Him, being delivered by the determined purpose and foreknowledge of God, you have taken by lawless hands, have crucified, and put to death.”
   •   Acts 2:23 (NKJV)

Notice the order -
First: the determined purpose and foreknowledge of God.
Then: human responsibility.

The cross was the sovereign plan of God.
Sin put Him there - all of us.

And Paul asks plainly:

“I say then, has God cast away His people? Certainly not!”
   •   Romans 11:1 (NKJV)

Certainly not.

God is faithful to His covenants.
The Messiah came as promised.
He laid down His life as foretold.
And the calling of Israel remains - because the character of God does not change.