Charles H. Spurgeon on Psalms 25:10

This is a rule without exception. God is good to those that be good. Mercy and faithfulness shall abound towards those who through mercy are made faithful. Whatever outward appearances may threaten we should settle it steadfastly in our minds that while grace enables us to obey the Lord's will we need not fear that Providence will cause us any real loss. There shall be mercy in every unsavoury morsel, and faithfulness in every bitter drop; let not our hearts be troubled, but let us rest by faith in the immutable covenant of Jehovah, which is ordered in all things and sure. Yet this is not a general truth to be trampled upon by swine, it is a pearl for a child's neck. Gracious souls, by faith resting upon the finished work of the Lord Jesus, keep the covenant of the Lord, and, being sanctified by the Holy Spirit, they walk in his testimonies; these will find all things working together for their good, but to the sinner there is no such promise. Keepers of the covenant shall be kept by the covenant; those who follow the Lord's commandments shall find the Lord's mercy following them.