Charles H. Spurgeon on Psalms 44:21

In time of persecution for religion, nothing can counterbalance the terrors and allurements of the persecutors, and make a man steadfast in the cause of God, save the fear of God, and love to God settled in the heart; for the reason of the saint's steadfastness in this Psalm, is because God would have searched out their sin if they had done otherwise, for he knoweth the secrets of the heart. David Dickson.