The blood of Jesus continually cleanses you in the same way that the combination of your liver and your physical blood continually cleanses your physical body.
The only requirement is that you admit that you have sinned and confess your sins.
Keep short accounts with God. When you sin, quickly confess, repent and receive God’s cleansing. Get up and keep going.
Nicky Gumbel - UK Vicar, Alpha Course (1955- )