What causes you to rejoice? Many things in life cause people to rejoice. For some, they rejoice in people: other’s lives, people in our lives, or their children. Children can bring you joy, but they can bring you heartache. If your joy is wrapped up in your children, you will find times of heartache. If you rejoice in your spouse, you know that even the best spouse will fail. If your joy is wrapped up in possessions, you find that even the greatest possessions will become boring or worthless.