On their way to the house they passed a huge tree, and Abraham heard a voice from its branches, singing, "Holy art thou, because thou hast kept the purpose for which thou wast sent." Abraham hid the mystery in his heart, thinking that the stranger did not hear it. Arrived at his house, he ordered the servants to prepare a meal, and while they were busy with their work, he called his son Isaac, and said to him, "Arise and put water in the vessel, that we may wash the feet of the stranger."
And he brought it as he was commanded, and Abraham said, "I perceive that in this basin I shall never again wash the feet of any man coming to us as a guest." Hearing this, Isaac began to weep, and Abraham, seeing his son weep, also wept, and Michael, seeing them weep, wept also, and the tears of Michael fell into the water, and became precious stones.