Just as the Israelites, the first generation could not enter into the Promised Land due to unbelief, but a later generation went in.
So that generation of unbelieving Jews were destroyed in 70AD, a later generation of believing Jews will enter in the future...
Romans 11:25-26 NKJV
[25] For I do not desire, brethren, that you should be ignorant of this mystery, lest you should be wise in your own opinion, that blindness in part has happened to Israel until the fullness of the Gentiles has come in. [26] And so all Israel will be saved, as it is written: "The Deliverer will come out of Zion, And He will turn away ungodliness from Jacob;