One. After Jesus gave commandment unto the disciples through the Holy Spirit (Acts 1:2). Jesus said to the disciples that they should wait for the promise of the Father, which ye have heard of Me (Acts 1:4). Then he said, Ye shall receive the power of the Holy Spirit upon you (Acts 1:8). A sound was heard as of a wind and there were seen cloven tongues like as of fire upon every apostle, and they were filled with the Holy Spirit, and they began to speak with other tongues as the Holy Spirit gave them utterance. Each one heard them speak with him in his own dialect; they spoke of the wonderful works of God, and Peter quoted to them from Joel 2:1 to end (Acts 2:1-18).