Holiness Pentecostalism
Holiness Pentecostalism is the original branch of Pentecostalism, which is characterized by its teaching of three works of grace: [1] the New Birth (first work of grace), [2] entire sanctification (second work of grace), and [3] Spirit baptism evidenced by speaking in tongues (third work of grace). The word Holiness refers specifically to the belief in entire sanctification as an instantaneous, definite second work of grace, in which original sin is cleansed and the believer is made holy, with the heart being made perfect in love.