Be still, and know that I am God. We must not interpret that 'Be still' in a sentimental manner. Some regard it as a kind of exhortation to us to be silent; but it is nothing of the sort. It means, 'Give up -or 'Give in' and admit I am God'. God is addressing people who are opposed to Him.
Martyn Lloyd-JonesThe very God whom we have offended has Himself provided the way whereby the offense has been dealt with. His anger, His wrath against sin and the sinner, has been satisfied, appeased and He therefore can now thus reconcile man unto Himself.
Martyn Lloyd-JonesThere are ideas in our hearts, there are wishes, there are aspirations, there are groanings, there are sighings that the world knows nothing about; but God knows them. So words are not always necessary. When we cannot express our feelings except in wordless groanings, God knows exactly what is happening.
Martyn Lloyd-Jones