The Lord, the God of Israel, says that He hates putting away. There are many, many passages which compare the relationship between God and His people to a marriage. Our relationship with the Lord is to be a blessed, heavenly, eternal relationship. Often when someone's spouse dies, the survivor is comforted by the thought that eventually they will be together again in heaven, and their relationship will continue as it had before. The Bible is not clear about marriage after death.
Many more passages hint that true marriage is an eternal covenant.