Job 31:15

Did not he that made me in the womb make him? and did not one fashion us in the womb?

The same God who formed Job in the womb also formed his servant there, fashioning them both.
Because they share one Creator, master and servant possess equal human worth, dignity and standing before God.
That common creation requires just and fair treatment, so no one may claim a greater right to liberty than another by enslaving or oppressing a fellow human being.
The same truth holds for rich and poor and for every person, who are made on the same general plan with equal rights to life, liberty and the pursuit of happiness, so that just rule guards the rights of all, including the weakest.

Words and Setting

The same Creator who made Job in the womb also made the other person, fashioning both alike in the womb. The statement belongs to Job's defense of his moral integrity, in which he challenges examination and calls for judgment if any stain is found in his character.

The surrounding passage presents Job as one of the richest men of his day who did not trust in his riches or rejoice because his wealth was great. He trusted in the living God and remembered that God gave him power to get wealth, viewing wealth always only as a means of blessing the poor, the needy, the fatherless, and the widow. Being rich is not sin; the sin is trusting in riches, putting confidence in them, rejoicing in them, and being proud and highminded because of them, which denies the God above.

The language that God made people in the womb does not mean each body is formed there by God's immediate action alone. It does not rule out natural causes in the propagation of the body, nor parent-to-child propagation in the formation of the body.

Equality and Just Treatment

The other person in view is the servant, so master and servant alike were made and fashioned in the womb by the same God. Because one Creator formed them both, people of different social standing have a common origin and equal standing before Him. That shared making gives them equal human worth and dignity.

This equality requires just and fair treatment of servants. No one is to be treated as having a greater claim to liberty than another, since master and servant share the same Maker. For the same reason people are not to enslave or oppress one another. The truth reaches beyond household service to rich and poor alike and to every person, whom the same God formed in the womb on the same general plan. All therefore possess equal rights to life, liberty, and the pursuit of happiness, with none having greater rights on account of wealth or strength, and just government protects the rights of all, including the weakest.