SOme of Jesus' last words spoken on earth are Acts 1:4-5 (KJV)
4 And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, saith he, ye have heard of me.
5 For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.
"They" were believers, already baptized in John's baptism in water. They needed power to minister. Acts 1:8-9 (KJV)
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.
9 And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight.
On the day of Pentecost they all received the promise of the Father to receive the Holy Spirit in them.
Many Christians believe, many have been water baptized, but many await the power, the gifts. When asked, most don't detect power to witness even one on one to a stranger, much less a neighbor. Many have been taught it's only necessary to do what the disciples did before the day of Pentecost, that they have all of the Spirit they can get upon just believing and being water baptized. When we are baptized in the Holy Spirit we receive the Spirit within us, and along with Him come the gifts, the power to minister. He divides the gifts as he sees fit for each believer to do their individual and collective missions. Here is the pattern.
1. Believe, repent, be spiritually born again into Christ.
2. Be baptized in water by a disciple as your first act of obedience, confessing Christ to men.
3. Be baptized in the Holy Spirit by Jesus for power to minister the gospel beyond mere human capability.
Since you believed, and testified through water baptism, have you known the power of God, enabled to minister the gospel with power? If not, there is yet another act for you. Ever since Pentecost the Holy Spirit comes into people through the laying on of hands by a disciple who can minister the gospel with power. It doesn't "just happen".