In his First Apology, chapter 61, the same writer draws a clear Biblical distinction between spiritual regeneration secured through repentance and faith, and ritual regeneration in baptism as a mere outward sign of the inward work. He says: "I will also relate the manner in which we dedicated ourselves to God when we had been made new through Christ ... as many as are persuaded and believe that what we teach and say is truth, and undertake to be able to live accordingly, are instructed to pray and to entreat God with fasting for the remission of their sins that are past, we praying and fasting with them. Then they are brought by us where there is water and are regenerated in the same manner in which we were ourselves regenerated. For, in the name of God, the Father and Lord of the Universe, and of our Savior Jesus Christ, and of the Holy Spirit, they then receive the washing with water." Other writers of the period under consideration, however, praise the saving efficacy of baptism in the most exalted terms. According to their minds, it is the actual means of the redemption of sins, not a mere literal rite expressing ceremonially the work of God's Spirit within the heart; it is an illumination; it extinguishes the fire of sin; it removes the unclean spirits from men and seals them for heaven. Tertullian wrote extensively on this subject. In his work On Baptism, chapters 3 to 8, he maintains the doctrine of baptismal regeneration "by which we are washed from the sins of our former blindness and set free for eternal life." He declares that by this act men are prepared to receive the Holy Ghost; that in the literal act, "the spirit is corporeally washed in the waters, and the flesh is, in the same, spiritually cleansed." Cyprian, bishop of Carthage (third century), in his treatise concerning the Baptism of Heretics, teaches the same doctrine in no uncertain terms. [Sidenote: Other erroneous doctrines and practises]