You shall receive power-Acts 1:4-12-Jesus’ appears to the disciples in Jerusalem-Jesus promised He would not leave them alone but would send the Holy Spirit. He promised that the Holy Spirit would be with them until He returned and would guide them and strengthen them. He then commanded them to stay in the city until they received the Holy Spirit. We are not to set out to be His witnesses until we receive the Spirit for we cannot do it effectively without the guidance and strength of the Holy Spirit.