What role does faith play in baptism according to the Bible?

The role of faith in baptism is emphasized in Acts 8:37, where Philip tells the eunuch that he may be baptized if he believes in Jesus Christ with all his heart. This illustrates the Reformed understanding that baptism follows genuine faith, affirming the individual's belief in the gospel. Baptism serves as a public declaration of faith and is a means of identifying the believer with Christ, as seen in the case of the Ethiopian eunuch who, upon believing, desired to be baptized immediately. This signifies the urgency and necessity of responding to God's call through faith before undergoing the sacrament of baptism.