Now that your sins have been forgiven -- they are "under the blood!" You sins have been washed away in the waters of baptism! You are ready for the empowerment of Acts 2:38, the receiving of the Holy Ghost! The teachings of Jesus are very pointed about remaining empty after you have been "swept and garnished." You must be filled with the Spirit! (Matt. 12:43) Jesus told the disciples in Luke 24:49 "... tarry in Jerusalem until you are endued with power from on High." Again in Acts 1:8, just before the Ascension, "Ye shall receive power after that the Holy Ghost has come upon you." When you receive the fullness of the Spirit you will speak in tongues, "...as the Spirit gives utterance" (Acts 2:4). Acts 10:46 is the most definite proof of this point.