Doesn't it make sense that if we are to know the mercy of God, we are going to have come face-to-face with our sin first? Or that if He is to be our Healer, there must first be some sickness? Or that if He is to be our Rescuer, we must be in some sort of trouble from which we need rescuing? Or that if we are to understand His compassionate comfort, we must have some kind of hardship that makes His comfort understandable? There are quite a few attributes of God that we simply cannot see unless we're in trouble or hurting or desperate. So don't be surprised if, when He shows you His glory, He shows it to you in a difficult context. That's where glory is best viewed.
Are you suffering? Be faithful and worship. Are you persecuted? Be faithful and worship. Are you in pain? Be faithful and worship. Just like Paul and Silas in the depths of a Philippian prison (Acts 16), just like Jehoshapat surrounded by hostile armies (2 Chronicles 20), be faithful. Don't be surprised at the trial you are suffering. It may be the answer to yesterday's prayer to see God's glory. Praise Him anyway. Painful praise is often the most profound kind of praise there is.
Our response whether in good times or bad, whether is ease or difficulty, whether in fruitfulness or barrenness, is to worship. It is never inapproriate. God is worthy at all times and in all places.
(an exract from: Worship The King by Chris Tiegreen)