James 3:2

3:2 For we all stumble in many ways. If someone does not stumble in what he says, he is a perfect individual, able to control the entire body as well.

James 1:26

1:26 If someone thinks he is religious yet does not bridle his tongue, and so deceives his heart, his religion is futile.

James 3:3

3:3 And if we put bits into the mouths of horses to get them to obey us, then we guide their entire bodies.

James 3:7-8

3:7 For every kind of animal, bird, reptile, and sea creature is subdued and has been subdued by humankind. 3:8 But no human being can subdue the tongue; it is a restless evil, full of deadly poison.