Revelation 3:2-4

Amplified Bible

² Wake up, and strengthen and reaffirm what remains [of your faithful commitment to Me], which is about to die; for I have not found [any of] your deeds completed in the sight of My God or meeting His requirements. ³ So remember and take to heart the lessons you have received and heard. Keep and obey them, and repent [change your sinful way of thinking, and demonstrate your repentance with new behavior that proves a conscious decision to turn away from sin]. So then, if you do not wake up, I will come like a thief, and you will not know at what hour I will come to you. ⁴ But you [still] have a few people in Sardis who have not soiled their clothes [that is, contaminated their character and personal integrity with sin]; and they will walk with Me [dressed] in white, because they are worthy (righteous).