Matthew Poole and continuators on James 3:4

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

The other Similitude in which a Man is compared to a Ship, the Tongue to the Rudder, the governing the whole Body to the turning about the Ship. As the Rudder is but a small thing, in Comparison of the much greater Bulk of a Ship, and yet being it self turned, turns the whole Ship (tho so great, and driven of so fierce Winds) which way soever the Steersman pleaseth: So likewise the Tongue, tho little to the whole Man (which may withal be driven, and acted by Storms of furious Passions) yet if it be it self under Government, the rest of the Man will be so too.