An adaptation of the Catechism for Young Children in modern English.
Question: Who should be baptized?
Answer: Everyone who repents of their sin and trusts in Christ for their salvation.
Question: Who should be baptized?
Answer: Believers and their children.
Question: Who are to be baptized?
Answer: Believers and their children.
Modify somewhat passive “are to be” for more active moral imperative “should”.