Revelation 3:3-5

Young's Literal Translation

³ `Remember, then, how thou hast received, and heard, and be keeping, and reform: if, then, thou mayest not watch, I will come upon thee as a thief, and thou mayest not know what hour I will come upon thee.

⁴ Thou hast a few names even in Sardis who did not defile their garments, and they shall walk with me in white, because they are worthy.

⁵ He who is overcoming -- this one -- shall be arrayed in white garments, and I will not blot out his name from the scroll of the life, and I will confess his name before my Father, and before His messengers.