Succinct but solemn warnings against vices to which kings are peculiarly tempted, as carnal pleasures and oppressive and unrighteous government are used to sustain sensual indulgence.
strength - mental and bodily resources for health and comfort.
thy ways - or course of life.
to that ... kings - literally, “to the destroying of kings,” avoid destructive pleasures (compare Pro 5:9; Pro 7:22, Pro 7:27; Hos 4:11).