Charles H. Spurgeon on Psalms 106:30

Elevation of mind and sweetness of spirit are pearls of great price, and if we wish to preserve them we had better intrust them to God's own keeping. If Moses lost his faith, it was by first losing self command: and if a man lose this, it is hard to say what next he may lose: like the mad warrior who makes a missile of his shield and hurls it at the head of all enemy, he is henceforward open to every fiery dart, to the cut and thrust of every assailant. But, as John Newton remarks, "The grace of God is as necessary to create a right temper in a Christian on the breaking of a china plate as on the death of an only son"; and as no man can tell on any dawning day but what that may be the most trying day in all his life, how wise to pray without ceasing, "uphold me according unto thy word. Hold thou me up, and I shall be safe." "Set a watch, O Lord, before my mouth: keep the door of my lips." "Who can understand his errors? Cleanse thou me from secret faults. Keep back thy servant also from presumptuous sins; let them not have dominion over me: then shall I be upright, and I shall be innocent from the great transgression." —James Hamilton.