In the history of interpretation, 1 Peter 3:21, especially as part of 3:18-22, is considered one of the more difficult passages in Scripture.
The Bible plainly teaches that if you want to serve God, you should be baptized. Jesus told his followers: “Go therefore and make disciples of all nations, baptizing them ... Water baptism is a necessity for all who desire to have a relationship with God. Baptism publicly evidences your wish to serve God. It shows that you are ... What Is Baptism?
Herein is some serious straight talk for the soul. Do not personalize the words in a condemnatory way but rather take them in as loving guidance.