"Forever" can also be a figurative idiom which means "for a long time".
Well we could twist anything into an idiom and we could make the Bible say whatever suits our lusts.
Considering all of the supporting scripture for the sabbath now, and in the kingdom to come; you have to jump through a lot of hoops to get around it.
(CLV) Hb 4:8
For if Joshua causes them to stop, He would not have spoken concerning another day after these things.
(CLV) Hb 4:9
Consequently a sabbatism is left for the people of God.
(CLV) Hb 4:10
For he who is entering into His stopping, he also stops from his works even as God from His own.
(CLV) Hb 4:11
We should be endeavoring, then, to be entering into that stopping, lest anyone should be falling into the same example of stubbornness.
(CLV) Ex 31:16
Hence the sons of
Israel will keep the sabbath so as to make the sabbath an
eonian covenant throughout their generations.
(CLV) Mt 15:24
Now He, answering, said, "I was
not commissioned
except for the lost sheep of the house of
Israel."
(CLV) Isa 66:23
And it will come to be, as often as the new moon comes in its monthly time, And as often as the sabbath comes in its sabbath cycle,
All flesh shall come to worship before Me, says Yahweh.