1. Remember (1-6)

To people Sardis had the reputation of being alive: growing in number with many dynamic activities; but Jesus said they were dead spiritually and needed to wake up. How? Remember the gospel they have received and heard, examine their lives and activities in the sight of God, repent and do what pleases him, not people. Those who didn't soil their robes with compromise Jesus would acknowledge before God. Reputation before the Father and angels is more important than the honor of people.

2. Yet you have kept my word (7-13)

In contrast, Philadelphia had little strength and no reputation. But Jesus was pleased to bless them by opening an eternal door for them, making their enemies bow before them, and delivering them from suffering and trials. Why? They kept his word, didn't deny his name, and kept his command to endure patiently. Jesus encourages them that he is coming soon, so "hold on to what you have."