For the director of music. For Jeduthun. A psalm of David. I said, "I will watch my ways and keep my tongue from sin; I will put a muzzle on my mouth while in the presence of the wicked." (NIV)
To the Chief Musician; for Jeduthun [founder of an official musical family]. A Psalm of David. I SAID, I will take heed and guard my ways, that I may sin not with my tongue; I will muzzle my mouth as with a bridle while the wicked are before me. (AMP)
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. (KJV)