Who can understand his errors? cleanse you me from secret faults.
In some waters a man may drive strong piles, and build his warehouses upon them, sure that the waters are not powerful enough to undermine his foundations; but there is an innumerable army of minute creatures at work beneath the water, feeding themselves upon those strong piles. They gnaw, they bore, they cut, they dig into the poled wood, and at last a child might overthrow those foundations, for they are cut through and eaten to a honeycomb. Thus by avarice, jealousy, and selfishness men's dispositions are often cut through, and they don't know it.
(H. W. Beecher.)
Parallel VersesKJV: Who can understand his errors? cleanse thou me from secret faults.