Revelation 3:4

2Be watchful, and strengthen the things which remain, that are ready to die: for I have not found thy works perfect before God.

3Remember therefore how thou hast received and heard, and hold fast, and repent. If therefore thou shalt not watch, I will come on thee as a thief, and thou shalt not know what hour I will come upon thee.

4Thou 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.

5He that overcometh, the same shall be clothed in white raiment; and I will not blot out his name out of the book of life, but I will confess his name before my Father, and before his angels.

6He that hath an ear, let him hear what the Spirit saith unto the churches.