James 3:3-5

Behold, we put bits in the horses' mouths, that they may obey us; and we turn about their whole body.

Behold also the ships, which though they be so great, and are driven of fierce winds, yet are they turned about with a very small helm, whithersoever the governor listeth.

Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth!