Malachi 2:14

14 You ask, "Why does he not?" Because the Lord was a witness between you and the wife of your youth, to whom you have been faithless, though she is your companion and your wife by covenant.

Malachi 2:14 In-Context

12 May the Lord cut off from the tents of Jacob anyone who does this—any to witness or answer, or to bring an offering to the Lord of hosts.
13 And this you do as well: You cover the Lord's altar with tears, with weeping and groaning because he no longer regards the offering or accepts it with favor at your hand.
14 You ask, "Why does he not?" Because the Lord was a witness between you and the wife of your youth, to whom you have been faithless, though she is your companion and your wife by covenant.
15 Did not one God make her? Both flesh and spirit are his. And what does the one God desire? Godly offspring. So look to yourselves, and do not let anyone be faithless to the wife of his youth.
16 For I hate divorce, says the Lord, the God of Israel, and covering one's garment with violence, says the Lord of hosts. So take heed to yourselves and do not be faithless.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.