Baptism is commanded by Christ for all believers. It is a step of obedience that every believer is expected to embrace. Baptism serves as a Christ-ordained picture of the believer's union with Him and a public expression of the believer's identification with Christ's visible body, the church. The Scriptural method is immersion since it symbolizes the saved sinner's identification with Christ whose death, burial, and resurrection God ascribes vicariously to the believer as judicial acceptance with God.
Baptism is not a means of saving grace nor a requisite for salvation but evidence of a conviction to be obedient to the Lordship of Jesus Christ (Matthew 28:19; Acts 2:38, 41; 8:12, 38; 9:18; Romans 6:3-4; 1 Corinthians 12:13; Luke 23:43).
The Lord's Supper is also commanded by Christ. It is for believers who are walking in obedience to His commands. The Lord's Supper is to take place within local expressions of Christ's body. It is a memorial service that celebrates Christ's triumphant and vicarious atonement for us. It celebrates our union with one another as the body of Christ. It serves to keep us eagerly watching for Christ's return. (Matthew 26:26-28; Mark 14:22-24; Luke 22:17-21; Acts 2:42; 1 Corinthians 11:23-34).