If baptized as an infant, do I need to be baptized again?
We’ll answer this question, but first let’s understand that water baptism plays no part in our salvation. It is by grace alone, through faith, that we are saved (Ephesians 2:8). It’s not by anything we do. Salvation is only by what Christ has done. We cannot add anything to the work that He did, by dying on the cross to pay the penalty for our sins. Our response to Christ’s work is to repent (turn from sin), turn to Christ and trust in Him alone for salvation.
When we repent and trust in Christ’s finished work on the cross, He saves us, and we are baptized into Him by the Holy Spirit.
"For by one Spirit are we all baptized into one body." (1 Corinthians 12:13)
In this baptism, we are also given the indwelling presence of the Holy Spirit to comfort (John 14:16), teach (John 14:26), guide (John 16:13) and seal (Ephesians 4:30) us.
This is the baptism of our salvation. Once again, this is not something we do, but something Christ does for us (John 1:33), and no water is involved.
Water baptism is a church sacrament (a church ceremony, or practice, that is considered holy and sacred because of its spiritual significance). Water baptism varies greatly among denominations in both practice and significance. There are two sacraments of baptism performed by Christians churches — (1) infant baptism or (2) youth and adult baptism (sometimes called believer’s baptism because the person makes a profession of faith). These baptisms can be performed by the sprinkling of water or by partial or full immersion in water.
Many churches that practice infant baptism do so with the understanding that the baby is being baptized into the family of believers and dedicated to the Lord. It does not impart any forgiveness of sins, since only Jesus can forgive sins, and only His blood can wash us clean (Revelation 1:5).