that the proof of your faith, which is more precious than gold that perishes even though it is tested by fire, may be found to result in praise, glory, and honor at the revelation of Jesus Christ--
The Greek word parousia means "presence" and, specifically, the presence of one coming, hence the coming of Christ. The "revelation" (uncovering, appearing, Gr. apokalypsis) of Jesus Christ to Christians will take place at the Rapture, and His revelation to the world will take place at the Second Coming. Both events seen as a whole seem to be in view here (cf. 1 Peter 1:13). Peter’s emphasis was not on when this would happen relative to other events yet future but on the fact that it would happen in the future rather than now.