Passage
`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.
`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.
Revelation 3:1 And to the messenger of the assembly in Sardis write: These things saith he who is having the Seven Spirits of God, and the seven stars: I have known thy works, and that thou hast the name that thou dost live, and thou art dead;
Revelation 3:2 become watching, and strengthen the rest of the things that are about to die, for I have not found thy works fulfilled before God.
Revelation 3:3 `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.
Revelation 3:4 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.
Revelation 3:5 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.
The verse centers on "remember", "thou", "hast", "received", "heard", "keeping", and "reform". It is saying that the verse draws attention to "remember" and "thou", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 2's "become watching and strengthen the rest of..." into verse 4's "Thou hast a few names even in...", so "remember" and "thou" belong inside that flow. In Revelation context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "remember" and "thou" with trust shaped by these words, not by a vague optimism outside the passage.