Through the baptism with water he invited people to open their heart to God's word through the coming Messiah. Jesus' Baptism included the power of the Holy Spirit. Jesus became empowered to go forth in public ministry following his baptism. Before that time, Jesus lived an unrecorded life, probably as a carpenter helping his foster-father Joseph. But with Jesus' Baptism, he went into the public with mission and ministry.
Baptisms are public events in the life of a Christian community.
This is the greatest event of the Christian Calendar, when Jesus rose from the dead which is celebrated the evening before Easter. In the early Christian church, all new Christians were baptized on this day. That service is filled with symbolism of new birth, light and dark, and belief in the risen Lord. We are baptized with Christ in his death, and share in his Resurrection. Seven weeks following the Easter Vigil is the Day of Pentecost.