How do we know that our baptism is valid?

The validity of baptism is contingent upon the individual's faith in Jesus Christ. Valid baptism occurs after a person has believed in Christ, demonstrated through genuine repentance and trust in Him. This is exemplified in Acts 8, where the Ethiopian eunuch is baptized only after he professes his belief in Christ. Therefore, baptism should be viewed as a response of faith, not merely a ritual or tradition. If someone was baptized without understanding or true belief, as seen with Simon the sorcerer, their baptism is not valid in the biblical sense.