After the resurrection, Jesus, showed Himself to the disciples and others for 40 days before He ascended to heaven, and in this time there were many things that happened that helped shape these men and women. The 10 days that followed were some of the most important days in the disciples life, what they done in those days set the tone for the rest of their life. They were on the verge of Pentecost, but they didn't know when that time would come, they just knew that the Holy Spirit was coming, so they were preparing themselves. As we look at Acts 1:12-26 we get a picture of what prepared them to change the world, of what made them such a powerful church, and therefore, what can make us a powerful church. I. They were faithful in worship. (12-14), II. They were fervent in the Word. (Vs. 15-20), They were fruitful in the work. (Vs. 21-26).