We see the beautiful examples of the early church where they constantly gather and pray. Among the people, there are women who are very low position in the old times. They became part of the main source for the support of building God's kingdom, and also the brother's of Jesus who used to not believe him. After the death and resurrection of Christ, they were all changed and united in one heart in prayer. The event of the Pentecost and the era of Holy Spirit is opened up through the time of prayer. We want to follow this example of the early church and be the one united in one heart to pray so God's power can be manifested on earth.