What did Jesus mean when He said marriages are not to be separated?

In Matthew 19, Jesus responds to the Pharisees' inquiries about divorce by clarifying that marriage is a divine ordinance. He references Genesis to remind us that a man and woman become one flesh, indicating a profound and sacred bond intended by God. This teaching signals the weight of commitment in marriage, asserting that it shouldn’t be broken easily. The emphasis that what God has joined together cannot be separated highlights the seriousness with which God views marriage and sets a precedent against casual divorce.