'Defiled' in the Bible

Thou hast a few names even in Sardis which have not defiled their garments; and they shall walk with me in white: for they are worthy.

These are they which were not defiled with women; for they are virgins. These are they which follow the Lamb whithersoever he goeth. These were redeemed from among men, being the firstfruits unto God and to the Lamb.