We should always affirm the greatness of God. When things are going well, this is easy. We are naturally more bright and positive in our outlook when everything is going our way. However, it is just possible that we need to declare God's greatness to ourselves and others even more when things do not seem to be going our way.
In Psalm 70 the psalmist writes, "Let those who love your salvation say evermore, 'God is great!'" (verse 4b). To me this suggests that those who are conscious of their need for some sort of rescue from God should be particularly focused on God's greatness. Why is this? I can think of a couple of reasons.
Focusing on God's greatness lifts our spirits. Our moods are largely set by where we place our attention. If our attention is on our problems, it pulls us down. But if we are placing God's greatness uppermost in our thoughts, our problems become insignificant by comparison.
Focusing on God's greatness increases our faith. Actually, when we recognize the limitless power and greatness of God and truly embrace it, very little faith is required. One of my favorite quotes is from a dear lady I met several years ago before she passed away. Corrie Ten Boom was much admired for how she endured the Nazi concentration camps during World War II and someone commented on her great faith. Corrie said, "No, I have only a little faith in a GREAT BIG GOD."
