Baptism is the greatest step a person can take. And, true baptism—that is, one that is genuine and valid in God's sight—is an once-in-a-lifetime step.
It is God who ordained the baptism ceremony and its deep significance. And God's word reveals that unless the right ministers of God with the right understanding carry out baptism in the right attitude, with the right knowledge, in the right manner, it is not honored and recognized by God.