In Malachi’s day, the Israelites were marrying women who led them to worship false gods and were being unfaithful to their wives. In response, this passage calls us today to honor God when pursuing marriage and honor God by being faithful in marriage.
The main problem in all of us is a problem of perspective. We need a perspective of God’s work and our lives that takes into account, not just all of life, but all of eternity. So, God draws our attention to the day of the LORD and the blessing of belonging.