As people came to john and received his message to “repent of their sins and turn to God” they confessed sins with their mouths and were physically put down into the water in baptism.
Confession is not a highly held practice for most Christians. Confession brings sin out into the open and helps the process of being set free from sin. Sin is lonked closely with shame that we keep locked within us. When we confess our sins to others who love and care for us we know that we need never struggle alone.
Find Christians near you with whom you can be honest and open and share your whole life. If you are married develop this type of accountability in your relationship. Confession in the bible occurred in community, never in isolation.
Baptism is the outward sign of God’s redemptive work leading us to repentance and belief. The people were baptised by John in the river to publicly show repentance. It is an essential aspect of repentance. Baptism ties the flag of belief to the flagpost of Christ.