Jesus' teachings on divorce and remarriage can be found primarily in the Gospels of Matthew, Mark, and Luke. He emphasized the sacredness and permanence of marriage, teaching against divorce except in cases of sexual immorality (also known as adultery).

In Matthew 19:3-9, the Pharisees questioned Jesus about divorce, testing him to see if he aligned with their differing interpretations of Jewish law. Jesus responded by referring to the creation account in Genesis 2:24, where God establishes the union of one man and one woman as a lifelong commitment: "Therefore what God has joined together, let no one separate." Jesus explained that Moses permitted divorce because of the hardness of people's hearts, but it was not God's original intention.

Jesus then clarified his stance on divorce, saying in Matthew 19:9, "I tell you that anyone who divorces his wife, except for sexual immorality, and marries another woman commits adultery." Here, Jesus allows divorce only in cases of sexual immorality, where one spouse has broken the marital covenant through adultery. In such cases, divorce is seen as a concession to the reality of human sinfulness.

Additionally, Jesus taught against the practice of divorcing one's spouse for trivial reasons. In Matthew 5:31-32, Jesus said, "It has been said, 'Anyone who divorces his wife must give her a certificate of divorce.' But I tell you that anyone who divorces his wife, except for sexual immorality, makes her the victim of adultery, and anyone who marries a divorced woman commits adultery." Jesus condemned divorcing one's spouse for reasons other than sexual immorality, as it would lead to the sin of adultery.

Jesus' teachings on divorce and remarriage were challenging for his disciples, as they recognized the difficulty of maintaining a lifelong commitment. In response to their astonishment, Jesus said in Matthew 19:10-12 that not everyone can accept this teaching, but those who can should. He acknowledged that some may choose to remain single for the sake of the kingdom of heaven, while others may marry and honor their commitment.

It is important to note that Jesus' teachings on divorce and remarriage are not meant to condemn or shame those who have experienced divorce. He recognized the brokenness of humanity and offered forgiveness and grace to all. Jesus' teachings emphasize the importance of commitment, faithfulness, and seeking reconciliation whenever possible.

Overall, Jesus' teachings on divorce and remarriage emphasize the sacredness of marriage and the need for commitment and faithfulness. Divorce is seen as an exception rather than the norm, permitted only in cases of sexual immorality. The teachings encourage individuals to honor their marital vows and seek reconciliation, while also acknowledging the reality of human sinfulness and offering forgiveness.