and let the endurance have a perfect work, that ye may be perfect and entire -- in nothing lacking;

For whoever keeps the entire law, yet fails in one point, is guilty of breaking it all.

Now if we put bits in the mouths of horses so that they will obey us, we can govern the direction of their entire bodies as well.

And the tongue is [like] a fire [i.e., like that spark]. [For] the tongue, as a part of the body, is [like] the world of evil. It corrupts the entire life [of a person] and inflames the course of nature itself [i.e., it affects a person throughout his whole earthly existence], and is ignited by hell itself [i.e., the evil produced by the fiery tongue has hell as its source and destiny].

For we all stumble and sin in many ways. If anyone does not stumble in what he says [never saying the wrong thing], he is a perfect man [fully developed in character, without serious flaws], able to bridle his whole body and rein in his entire nature [taming his human faults and weaknesses].