The Lord didn't send his disciples out solo. He sent them out in pairs. Pairs were — and still are — more than twice as effective as a single person in accomplishing the work of preparing people's hearts for the Kingdom of God and the good news about Jesus. Several Jewish principles were behind Jesus' approach. First, testimony needed to be at the hands of two or more witnesses to be considered reliable. Second, two are stronger and more effective than one. To these principles, Jesus added a third one of his own: Where two or three gather, there he is present (Matthew 18:19-20). No matter how strong we are, we need a partner. Even the incredibly committed apostle Paul needed his co-workers and friends (see 2 Timothy). We need each other to do God's work and accomplish God's mission. Don't try to do it solo!