Bede

For length of days, and years of life, etc. Lest the imposition of observing precepts should disturb the listener, he prefaces with certain rewards, and so enumerates the precepts. For by the length of days, he signifies eternal light; by the years of life, the transition from this mortality; by the increase of peace, he designates the very state of attained blessedness. Of which Isaiah says: His authority shall increase, and there shall be no end of peace (Isaiah IX). …

Commentary on Proverbs ↗