Set a watch, O Lord, before my mouth; keep the door of my lips. Incline not my heart to [any] evil thing, to practise wicked works with men that work iniquity: and let me not eat of their dainties. Let the righteous smite me; [it shall be] a kindness: and let him reprove me; [it shall be] an excellent oil, [which] shall not break my head: for yet my prayer also [shall be] in their calamities.