According to the word of God the plan of salvation is a simple one, but it requires first that one admit they are a sinner according to Romans 3:10 and that they are lost without God. Repentance and faith on behalf of the poor lost soul, exhibited in Jesus Christ is the only requirement according to Acts 2:37 and Acts 10:43.
Ephesians 2:8-9 Declares to us that it is thru faith alone in Jesus Christ and not thru any merit or good work of our own that we are saved.