Charles H. Spurgeon on Psalms 119:80

Let my heart be sound in thy statutes; that I be not ashamed. This is even more important than to be held in esteem by good men. This is the root of the matter. If the heart be sound in obedience to God, all is well, or will be well. If right at heart we are right in the main. If we be not sound before God, our name for piety is an empty sound. Mere profession will fail, and undeserved esteem will disappear like a bubble when it bursts; only sincerity and truth will endure in the evil day. He who is right at heart has no reason for shame, and he never shall have any; hypocrites ought to be ashamed now, and they shall one day be put to shame without end; their hearts are rotten, and their names shall rot. This eightieth verse is a variation of the prayer of the seventy-third verse; there be sought sound understanding, here he goes deeper, and begs for a sound heart. Those who have learned their own frailty by sad experience, are led to dive beneath the surface, and cry to the Lord for truth in the inward parts. In closing the consideration of these eight verses, let us join with the writer in the prayer, "Let my heart be sound in thy statutes."