Psalm 141:3
Set thou, O Yahweh, a watch at my mouth, Keep thou guard over the door of my lips.
Micah 7:5
Do not trust in a friend, do not put confidence in an associate, - from her that lieth in thy bosom, keep thou the doors of thy mouth;
Psalm 39:1
I said, to myself, I will take heed to my ways, That I sin not with my tongue, - I will put on my mouth a muzzle, So long as the lawless is before me.
Psalm 17:3-5
Thou hast tested my heart, hast made inspection by night, hast refined me until thou couldst find nothing, Had I devised evil, my mouth should not have transgressed:
Psalm 34:13
Keep thy tongue from wickedness, And thy lips from speaking deceit:
Psalm 71:8
My mouth shall be filled with, thy praise, All the day, with thy splendour.
James 1:26
If any thinketh he is observant of religion, not curbing his own tongue, but deceiving his own heart, this one's, religious observance is, vain:
James 3:2
For, oft, are we stumbling, one and all: If anyone, in word, doth not stumble, the same, is a mature man, able to curb even the whole body.