Although these disciples had already been baptized, the name of Jesus was so important as to cause them to be rebaptized in His name. And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house. He said that his gospel was not a tradition of men but a revelation from God. I certify you, brethren, that the gospel which was preached of me is not after man. Paul was chosen to bear Jesus' name to the Gentiles, and he wrote many divinely inspired epistles to the church.
Water baptism is done in both word and deed.
We cannot afford to overlook this command to the church. The apostles not only preached baptism in Jesus' name, but they practiced it. Instead, we find them baptizing the name of the Lord Jesus Christ. Let this be a solemn warning to us. But Peter spoke on the Day of Pentecost under the anointing of the Holy Ghost.