Exodus 4:25 - Joseph Benson’s Commentary on the Old and New Testaments

Zipporah took a sharp stone Or a knife made of flint, a species of knives commonly used, as ancient writers assure us, in those days; and cut off the foreskin of her son She perceived, it seems, the danger of her husband, and the cause of it, and he being disabled from performing the office, whether by some stroke of affliction, or the terror of so dreadful and unexpected an appearance, and a delay in a matter of such moment being dangerous, she immediately performed the work herself. And now, the cause being removed, God's anger ceased, and Moses was permitted to pursue his journey. Surely a bloody husband art thou to me The words in the original are short and ambiguous. As here translated, they imply that she passionately reprobated both him and his religion, which required this bloody ceremony, as if she had said, This I have for marrying a Hebrew. But the words may be understood as expressing great affection, and signifying that she had now espoused him afresh by circumcising her son, the blood of that rite having been the means of restoring him to her again, or that her child was now espoused to God by the covenant of circumcision, as some read it. The Septuagint renders the passage, Zipporah, having taken a sharp knife, circumcised her son, and fell down at his (Moses's) feet, and said, The blood of the circumcision of my child is stopped, and she went away from him; that is, she and her children went home to Midian, when she found the child was out of danger, and able to travel. It is at least probable, that on this occasion she went back to her father with the children, and that Moses consented to this that they might not create him any further uneasiness. When we have any special service to do for God, we should remove as far from us as we can whatsoever is likely to be our hinderance. Let the dead bury their dead, but follow thou me.