… and the former shall not be remembered, nor come into mind. – Isaiah 65:17
Therefore, if any one is in Christ, he is a new creation; the old has passed away, behold, the new has come. – 2 Corinthians 5:17
In those last days we shall be in tune with Dr. Watts when he sang-
“Lo! what a glorious sight appears
To our believing eyes!
The earth and seas are pass’d away,
And the old rolling skies.
“From the third heaven, where God resides,
That holy, happy place,
The new Jerusalem comes down,
Adorn’d with shining grace.
“The God of glory down to men
Removes his bless’d abode,
Men the dear objects of His grace,
And He their loving God.
“His own soft hand shall wipe the tears
From every weeping eye,
And pains, and groans, and griefs, and fears,
And death itself shall die.”
As an instance of the expulsive power of a new delight, we all know how the memory of the old dispensation is gone from us. Brethren, did any one of you ever weep because you did not sit at the Passover? Did you ever regret the Paschal lamb? Oh, never, because you have fed on Christ! Was there ever man that knows his Lord that ever did lament that he had not the sign of the old Abrahamic covenant in his flesh? Nay, he gladly dispenses with the rites of the old covenant, since he has the fullness of their meaning in his Lord. The believer is circumcised in Christ, buried in Christ, risen in Christ, and in Christ exalted to the heavenly places. ~ C.H. Spurgeon
https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2211.cfm