The greater part of the tribes could not stand this trial. They had a dim knowledge that the God of their fathers was a being very different from the Egyptian idols; but even this knowledge seemed to decrease from day to day. Love of imitation, sore oppression, and daily misery made them obtuse, and obscured the faint light of their hereditary law. The enslaved labourers did not know what to think of an unseen God who only lived in their memories. Like their masters, the Egyptians, they now lifted their eyes to the visible gods who showed themselves so merciful and propitious to Israel's tormentors. They directed their prayers to the bovine god Apis, whom they called _Abir_,[1] and they also offered to the he-goats.[2] The daughter of Israel, growing up to womanhood, sacrificed her virtue, and abandoned herself to the Egyptians.[3] It was probably thought that, in the images of the grass-eating animal, honour was paid to the god of the patriarchs. When the intellect is on a wrong track, where are the limits for its imaginings? The Israelites would have succumbed to coarse sensual idolatry and to Egyptian vice, like many other nations who had come under the influence of the people of the land of Ham, had not two brothers and their sister--the instruments of a higher Spirit--aroused them and drawn them out of their lethargy. These were MOSES, AARON and MIRIAM.[4] In what did the greatness of this triad consist? What intellectual powers led them to undertake their work of redemption, the elevating and liberating effect of which was intended to extend far beyond their own times? Past ages have left but few characteristic traits of Moses, and barely any of his brother and sister, which could enable us to comprehend, from a human point of view, how their vision rose step by step from the faint dawn of primitive ideas to the bright sunlight of prophetic foresight, and by what means they rendered themselves worthy of their exalted mission. The prophetic trio belonged to that tribe which, through its superior knowledge, was regarded as the sacerdotal tribe, namely, the tribe of Levi. This tribe, or at least this one family, had doubtless preserved the memory of the patriarchs and the belief in the God of their fathers, and had accordingly kept itself aloof from Egyptian idolatry and its abominations.