And there will be no doubt that men may be baptized with the Holy Ghost without water, as thou observest that these were baptized before they were baptized with water; that the announcements of both John and of our Lord Himself were satisfied, forasmuch as they received the grace of the promise both without the imposition of the apostle’s hands and without the laver [baptismal font], which they attained afterwards. And their hearts being purified, God bestowed upon them at the same time, in virtue of their faith, remission of sins; so that the subsequent baptism conferred upon them this benefit alone, that they received also the invocation of the name of Jesus Christ, that nothing might appear to be wanting to the integrity of their service and faith.

Anonymous Treatise on Re-baptism (254-257 A.D.)