first-born son, Jehovah could not relinquish him, but must deliver His son from the bondage of Egypt.
verses 24-26
But if Moses was to carry out the divine commission with success, he must first of all prove himself to be a faithful servant of Jehovah in his own house. This he was to learn from the occurrence at the inn: an occurrence which has many obscurities on account of the brevity of the narrative, and has received many different interpretations. When Moses was on the way, Jehovah met him at the resting-place (מלון, see Gen 42:27), and sought to kill him. In what manner, is not stated: whether by a sudden seizure with some fatal disease, or, what is more probable, by some act proceeding directly from Himself, which threatened Moses with death. This hostile attitude on the part of God was occasioned by his neglect to circumcise his son; for, as soon as Zipporah cut off (circumcised) the foreskin of her son with a stone, Jehovah let him go. צור = צוּר, a rock, or stone, here a stone knife, with which, according to hereditary custom, the circumcision commanded by Joshua was also performed; not, however, because “stone knives were regarded as less dangerous than those of metal,” nor because “for symbolical reasons preference was given to them, as a simple production of nature, over the metal knives that had been prepared by human hands and were applied to daily use.” For if the Jews had detected any religious or symbolical meaning in stone, they would never have given it up for iron or steel, but would have retained it, like the Ethiopian tribe of the Alnaii, who used stone knives for that purpose as late as 150 years ago; whereas, in the Talmud, the use of iron or steel knives for the purpose of circumcision is spoken of, as though they were universally employed. Stone knives belong to a time anterior to the manufacture of iron or steel; and wherever they were employed at a later period, this arose from a devoted adherence to the older and simpler custom (see my Commentary on Jos 5:2). From the word “her son,” it is evident that Zipporah only circumcised one of the two sons of Moses (Exo 4:20); so that the other, not doubt the elder, had already been circumcised in accordance with the law. Circumcision had been enjoined upon Abraham by Jehovah as a covenant sign for all his descendants; and the sentence of death was pronounced upon any neglect of it, as being a breach of the covenant (Gen 17:14). Although in
