“How shall we escape, if we neglect so great salvation; which at the first began to be spoken by the Lord, and was confirmed unto us by them that heard him; God also bearing them witness, both with signs and wonders, and with divers miracles, and gifts of the Holy Ghost, according to his own will?” Heb 2:3-4
Jesus said that he who believes and is baptized shall be saved. (Mark 16:15-16, John 7:38)
Jesus said repentance and remission of sins would be preached in His name to all nations BEGINNING in Jerusalem. (Luke 24:45-47)
Jesus declared that he who believes, as the scripture says, out of his belly shall flow rivers of living water; referring to the Holy Ghost. (John 7:38-39)
Jesus gave Peter, who first declared Jesus was the Christ, the key(s) to the kingdom. (Matt 16:18-19) Peter preached the message that opened the door to the kingdom to the Jews on the Day of Pentecost, (Acts 2:-42) the Gentiles, (Acts 10:43-48) and assisted in the Samaritans being indwelt by the Holy Ghost. (Acts 8:12-18)