According to all that has been said, the following is the only judgment we can form of the origin of the two narratives of the angelic apparitions. The conception of Jesus through the power of the Holy Ghost ought not to be grounded upon a mere uncertain suspicion; it must have been clearly and positively asserted; and to this end a messenger from heaven was required, since theocratic decorum seemed to demand it far more in relation to the birth of the Messiah, than of a Samson or a John. Also the words which the angels use, correspond in part with the Old Testament annunciations of extraordinary children. [210] The appearing of the angel in the one narrative beforehand to Mary, but in the other at a later period to Joseph, is to be regarded as a variation in the legend or in the composition, which finds an explanatory counterpart in the history of the annunciation of Isaac. Jehovah (Gen. xvii. 15) promises Abraham a son by Sarah, upon which the Patriarch cannot refrain from laughing; but he receives a repetition of the assurance; Jehovah (Gen. xviii. 1 ff.) makes this promise under the Terebinth tree at Mamre, and Sarah laughs as if it were something altogether novel and unheard of by her; lastly, according to Genesis xxi. 5 ff. it is first after Isaac’s birth that Sarah mentions the laughing of the people, which is said to have been the occasion of his name; whereby it appears that this last history does not presuppose the existence of the two other accounts of the annunciation of the birth of Isaac. [211] As in relation to the birth of Isaac, different legends or poems were formed without reference to one another, some simpler, some more embellished: so we have two discordant narratives concerning the birth of Jesus. Of these the narrative in Matthew [212] is the simpler and ruder style of composition, since it does not avoid, though it be but by a transient suspicion on the part of Joseph, the throwing a shade over the character of Mary which is only subsequently removed; that in Luke, on the contrary, is a more refined and artistical representation, exhibiting Mary from the first in the pure light of a bride of heaven. [213] § 25. IMPORT OF THE ANGEL’S MESSAGE.—FULFILMENT OF THE PROPHECY OF ISAIAH.