I heard a story about a daughter who wrote her dad about marrying someone she met online: “We met on eHarmony, became friends on Facebook, had long chats on WhatsApp. He proposed on Zoom.” Her dad replied, “I suggest you two get married on X, have fun on Tango, buy your kids on Amazon, and, when you get fed up with this new husband, just sell him on eBay.” There are lots of views today on what marriage is, but the one opinion that should really matter is that of the One who invented marriage—Jesus. Even though Jesus was single and never married, He knew more about marriage than any marriage counselor because marriage was His idea. When the Pharisees asked Him about divorce, Jesus didn’t answer their question about how to get out of marriage. Instead, He explained why you should stay in marriage. In one simple but unbelievably strong sentence, Jesus taught that in marriage math, 1 + 1 = 1. In this passage, Jesus outlined the three principles you need to guard what God has established and, in doing so, fulfill His purpose in your life.