The “sinner’s prayer” is the basic prayer where we admit our sin and our need for a Savior, ask for forgiveness, and confess Jesus to be our Savior and Lord. It is generally considered by evangelicals to be the moment when someone is “saved”, when a spiritual conversion and rebirth takes place, and that person becomes a “new creature” (2 Cor. 5:17).
However…out of the approximate two thousand year history since the church was born…the “sinner’s prayer” has been part of our practice for less than 150 years.