We receive our identity from others, from the expectations of friends and colleagues, from the labels society puts upon us, and from the influence of family.
To become Christian is to receive a new identity. You no longer allow others to tell you who you are. Christ now claims you and instructs you. A Christian is one who has “put on Christ.”
Baptism celebrates becoming that new person. That is why the church’s ritual begins with putting off the old, renouncing sin and the evil powers of the world, and pledging our loyalty to Christ.