Exodus 4:26

So he let him go — The destroying angel withdrew. But still Zipporah cannot forget, but will unreasonably call Moses a bloody husband, because he obliged her to circumcise the child; and upon this occasion, (it is probable) he sent them back to his father — in — law, that they might not create him any farther uneasiness. When we have any special service to do for God, we should remove that as far from us as we can, which is likely to be our hindrance: let the dead bury their dead, but follow thou me.