Second Temple marriage, Malachi 4, and sealing language
Malachi’s promise that Elijah would turn the hearts of fathers and children is read in the Restoration as sealing work. Jewish marriage was covenant, not contract only, and the hope of resurrection made family more than a mortal convenience.
The Restoration’s distinctive is not that marriage matters. It is that priesthood keys can make the Lord’s joining survive death. Civil vows and even Christian weddings without those keys do not, of themselves, claim eternity. That is Matthew 16:19 applied to Matthew 19:6.

