10. Come now therefore. After God had furnished his servant with promises to engage him more cheerfully in his work, he now adds commands, and calls him to undertake the office to which he is designed. And this is the best encouragement to duty, when God renders those, who would be otherwise slow through doubt, sure of good success; for although we must obey God’s plain commands without delay or hesitation, still he is willing to provide against our sluggishness by promising that our endeavors shall not be vain or useless. And certainly it is a feeling naturally implanted in us all, that we are excited into action by a confidence of good success; therefore although God sometimes, for the purpose of trying the obedience of his servants, deprives them of hope, and commands them peremptorily to do this or that, still he more often cuts off hesitation by promising a successful issue. Thus, then, he now aroused Moses to perform his commands by setting the hope of the deliverance before him. The copula must be resolved into the illative particle, because the command and vocation undoubtedly depend upon the promise.