For this reason, the sexually immoral and adulterers are expressly excluded from God’s kingdom (1 Cor. 6:9–10, Gal. 5:19ff., Rev. 21:8, Rev. 22:15). The Lord God often begins to address these sins with temporal punishments already in this life. So if we want Christ, the Son of the pure Virgin Mary, to dwell in our hearts (Eph. 3:17), then we must be hostile to all shameful words and deeds. If we want the holy angels, those pure spirits, to be with us, then we must strive for true chastity. If we wish to be the temples and dwellings of the Holy Spirit, then surely we must not sin against our own bodies with harlotry. If we wish to see God face to face in eternal life, then we must strive for holiness and purity, for “without holiness no one will see the Lord” (Heb. 12:14). If we ever wish to enter the heavenly Jerusalem, then we must guard ourselves from all contamination of body and spirit, for nothing common or impure can enter the heavenly Jerusalem (Rev. 21:8).
(Sermon for Mary Magdalene-July 22, Postilla Volume 3 by Johann Gerhard, Repristination Press, page 110)