What Does Matthew 5:36 Mean in the King James?

Neither shalt thou swear by thy head, because thou canst not make one hair white or black.

Matthew 5:36 · KJV

The analysis reads the King James wording.

King James Version The King James Version, first published in 1611. Selah Verse shows the standard text.

THE KEY

The head you swear by cannot certify your promise, because even one hair’s color is beyond your command.

THE MEANING

Your body is not something whose future you can guarantee. Even a hair’s color lies outside your power, so swearing by your head cannot add certainty to what you say.

WHAT THIS UNDOES

It undoes the belief that invoking your own body makes a promise more secure: you do not command the body you invoke.

THE ROOT

δύνασαι

dýnasai

GROWS FROM

δυνα-

dyna-

to be able; to have power

“canst” in this verse is dýnasai. The verse locates the limit in ability: you cannot dictate even a hair’s color, so an oath cannot make your body a guarantee. The same stem names ability and power, revealing the gap between speaking with certainty and possessing control.

ALSO GROWS

dýnamis: power, capacity

δύναμις

This noun names the power the verse shows you do not have over your hair’s color.

dynatos: able, capable

δυνατός

This adjective names capability; the verse makes its absence concrete in the color of one hair.

THE PATTERN

Human speech cannot secure what human power cannot control.

Boast not thyself of to morrow; for thou knowest not what a day may bring forth.

Proverbs 27:1 · KJVThe verse places tomorrow beyond the certainty a person might claim in speech.

There is no man that hath power over the spirit to retain the spirit; neither hath he power in the day of death: and there is no discharge in that war; neither shall wickedness deliver those that are given to it.

Ecclesiastes 8:8 · KJVThe limits of human power extend even to holding on to life in the face of death.

Whereas ye know not what shall be on the morrow. For what is your life? It is even a vapour, that appeareth for a little time, and then vanisheth away.

James 4:14 · KJVA life that passes like vapor cannot be made certain by speaking as though tomorrow were under one’s control.

THE THREAD

And which of you with taking thought can add to his stature one cubit?

Luke 12:25 · KJV

Both verses use the same Greek verb for being able: Matthew applies it to changing one hair’s color, while Luke applies it to adding a cubit to one’s stature. Each makes the body a concrete measure of what a person cannot command.

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