Psalms 141:3-5

Set a guard, O Yahweh, over my mouth; keep watch over the door of my lips. Do not incline my heart to any evil thing, to practice wicked deeds with men who do iniquity; and do not let me eat of their delicacies. Let a righteous one strike me in kindness, and let him chasten me. It is oil for my head; let not my head refuse. For still my prayer is against their evil deeds.