SONG OF MOSES. (Exo. 15:1-27) Then sang Moses and the children of Israel--The scene of this thanksgiving song is supposed to have been at the landing place on the eastern shore of the Red Sea, at Ayoun Musa, "the fountains of Moses." They are situated somewhat farther northward along the shore than the opposite point from which the Israelites set out. But the line of the people would be extended during the passage, and one extremity of it would reach as far north as these fountains, which would supply them with water on landing. The time when it was sung is supposed to have been the morning after the passage. This song is, by some hundred years, the oldest poem in the world. There is a sublimity and beauty in the language that is unexampled. But its unrivalled superiority arises not solely from the splendor of the diction. Its poetical excellencies have often drawn forth the admiration of the best judges, while the character of the event commemorated, and its being prompted by divine inspiration, contribute to give it an interest and sublimity peculiar to itself. I will sing unto the Lord, for he hath triumphed gloriously--Considering the state of servitude in which they had been born and bred, and the rude features of character which their subsequent history often displays, it cannot be supposed that the children of Israel generally were qualified to commit to memory or to appreciate the beauties of this inimitable song. But they might perfectly understand its pervading strain of sentiment; and, with the view of suitably improving the occasion, it was thought necessary that all, old and young, should join their united voices in the rehearsal of its words. As every individual had cause, so every individual gave utterance to his feelings of gratitude.