Jesus said that only when we are converted and become like children can we enter the kingdom of heaven (Matthew 18:3). What, then, does it mean to become like children? It implies that we have to humble ourselves before God the Creator like children. When learning truth from Him, believing in Him, and following His will, we will realize the true purpose of our lives. By acting accordingly, we will be able to enter into the heavenly kingdom which is filled with happiness.