ἀπολούω: to wash off or away; in the N. T. twice in 1 aorist middle figuratively (cf. Philo de mut. nom. § 6, i., p. 585, Mang. edition): ἀπελούσασθε, 1Co_6:11; βάπτισαι καί ἀπόλουσαι τάς ἁμαρτίας σου, Act_22:16. For the sinner is unclean, polluted as it were by the filth of his sins. Whoever obtains remission of sins has his sins put, so to speak, out of God's sight is cleansed from them in the sight of God. Remission is (represented as) obtained by undergoing baptism; hence, those who have gone down into the baptismal bath (lavacrum, cf. Tit_3:5; Eph_5:26) are said ἀπολούσασθαι to have washed themselves, or τάς ἁμαρτίας ἀπολούσασθαι to have washed away their sins, i. e. to have been cleansed from their sins.

ἀπολούω apolouō 2x to cleanse by bathing; mid. to cleanse one s self; to procure one s self to be cleansed; met., of sin, Act_22:16 ; 1Co_6:11 * wash, washing.

ἀπο -λούω , [in LXX : Job_9:30 ( H7364 ) * ;] to wash off, wash away; mid ., metaph ., c . acc rei , to wash off oneself: ἀμαρτίας , Act_22:16 ; absol. , ἀπελούσασθε , ye washed yourselves clean ( cf. Cremer , 406), 1Co_6:11 .†

ἀπολούω c. acc. rei, "to wash off" dirt, Il. : Mid. ἅλμην ὤμοιν ἀπολούεσθαι "to wash" the brine "from off my" shoulders, Od. c. acc. pers. "to wash clean", Ar. :— Mid. "to wash oneself", Il. c. acc. pers. et rei, Πάτροκλον λοῦσαι ἄπο βρότον "to wash" the gore "off" him, id=Il.

ἀπο-λούω [in LXX: Job.9:30 (רָחַץ)* ;] to wash off, wash away; mid., metaphorically, with accusative of thing(s), to wash off oneself: ἀμαρτίας, Act.22:16; absol., ἀπελούσασθε, ye washed yourselves clean (cf. Cremer, 406), 1Co.6:11.† (AS)