forever - perpetual

Sounds so Mormon...

Eternal marriage is essential for exaltation in the highest degree of the celestial kingdom,

and it is attained only through being sealed by the proper authority in the temple and then

living in accordance with the covenants entered into at that time.

This lesson will reaffirm to students that marrying the right person in the right place and

by the right authority is the most important decision they will ever make.

https://www.churchofjesuschrist.org/study/manual/the-eternal-family-teacher-manual/lesson-15-eternal-marriage?lang=eng

or....

Matthew 22:30 “At the resurrection, people will neither marry nor be given in marriage; they will be like the angels in heaven.”

Pick one.

And then there is...

When Mormon 'Prophet' and second President of the Church, Brigham Young, spoke in 1863 the following was said:

Shall I tell you the law of God in regard to the African race?
If the white man who belongs to the chosen seed mixes his blood with the seed of Cain, the penalty, under the law of God is death on the spot.
This will always be so." (Journal of Discourses, Vo. 10, p. 110)

The Doctrine and Covenants

Section 132:3-6

Revelation given through Joseph Smith the Prophet, at Nauvoo, Illinois, recorded 12 July 1843, relating to the new and everlasting covenant, including the eternity of the marriage covenant, and also the plurality of wives (see History of the Church, 5:501–7). Although the revelation was recorded in 1843, it is evident from the historical records that the doctrines and principles involved in this revelation had been known by the Prophet since 1831.

1–6, Exaltation is gained through the new and everlasting covenant;

3 Therefore, ^aprepare thy heart to receive and ^bobey the instructions which I am about to give unto you; for all those who have this law revealed unto them must obey the same.

4 For behold, I reveal unto you a new and an everlasting ^acovenant; and if ye abide not that covenant, then are ye ^bdamned; for no one can ^creject this covenant and be permitted to enter into my glory.

5 For all who will have a ^ablessing at my hands shall abide the ^blaw which was appointed for that blessing, and the conditions thereof, as were instituted from before the foundation of the world.

6 And as pertaining to the new and ^aeverlasting covenant, it was instituted for the fulness of my ^bglory; and he that receiveth a fulness thereof must and shall abide the law, or he shall be damned, saith the Lord God.