KJV:
{To the chief Musician, even to Jeduthun, A Psalm of David.} I said, I will take heed to my ways, that I sin not with my tongue: I will keep my mouth with a bridle, while the wicked is before me.
NASB:
For the choir director, for Jeduthun. A Psalm of David. I said, "I will guard my ways That I may not sin with my tongue; I will guard my mouth as with a muzzle While the wicked are in my presence."