3260. That God blessed Isaac his son. That this signifies the beginning of the representation by Isaac, may be seen from the signification of the expression, "God blessed." Among the ancients, when a work was to be commenced, it was customary to say, "May God bless it;" and by this was signified the same as is meant by the expression of the wish, "May it be prosperous and happy;" and thus in a more remote sense, by, "May God bless," as well as by, "May it be prosperous and happy," there is signified a beginning, here the beginning of the representation by Isaac, because this follows immediately after the end of the representation by Abraham, which is signified by his death.