Worship is a Unity (1)
Jeremiah was called to preach repentance when the nation of Israel was deteriorating. God also gave him a message of building and planting which included the promise of a New Covenant. It will be written on the hearts of people, not just on tablets of stone. The New Covenant is limited to only people who know God, which is a link to the teaching about the New Covenant in the New Testament. Various denominations have different views about how baptism should be done and what part it plays in your conversion experience.