Paul speaks of the assembly of believers as though it were a woman whom Jesus will marry. Alternate translation: "sanctified us ... cleansed us" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Possible meanings are 1) Paul is referring to God making Christ's people clean by God's word and through water baptism in Christ or 2) Paul speaks of God making us spiritually clean from our sins by the message as if God were making our bodies clean by washing them with water. (See: [[rc://en/ta/man/translate/figs-metaphor]])