Acts 1:8 But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.
What is the purpose of the power of the Holy Spirit of God? When they received the power of the Holy Spirit they were going to be witnesses from where they were to the uttermost parts of the earth. How much preaching is done about Him and His power for our own fulfillment, the growth of our local church to the exclusion of His world wide purpose? We have His power, His Word, and all we need to take the gospel the world. Lets be witnesses.
Acts 1:11 Which also said, Ye men of Galilee, why stand ye gazing up into heaven? this same Jesus, which is taken up from you into heaven, shall so come in like manner as ye have seen him go into heaven.
What are you doing just standing there looking up? He has paid the price! He has given you the commission and the ministry of reconciliation! It is time to be about the Father’s work. He told you to wait until He came on you in power. He has done so now. Get to being witnesses to the entire world.