Prior to the two thousand years during which Jehovah did His work, man knew nothing, and almost all humanity had fallen into depravity, until, before the destruction of the world by the flood, they had reached a depth of promiscuity and corruption in which their hearts were entirely devoid of Jehovah, and further wanting of His way. They never understood the work Jehovah was going to do; they lacked reason, had even less knowledge, and, like machines that breathed, were consummately ignorant of man, God, the world, life, and so on. On earth, they engaged in many seductions, like the serpent, and said many things that were offensive to Jehovah, but because they were ignorant, Jehovah did not chastise or discipline them. Only after the flood, when Noah was 601 years old, did Jehovah formally appear to Noah and guide him and his family, leading the birds and beasts that had survived the flood along with Noah and his descendants, until the end of the Age of Law, lasting a total of 2,500 years. He was at work in Israel, that is, formally at work, for a total of 2,000 years, and at work simultaneously in Israel and outside of it for 500 years, together making 2,500 years. During this period, He instructed the Israelites that to serve Jehovah, they should build a temple, put on priestly robes, and walk barefoot into the temple at dawn, lest their shoes sully the temple and the fire be sent down on them from the pinnacle of the temple and burn them to death. They carried out their duties and submitted to Jehovah’s plans. They prayed to Jehovah in the temple, and after receiving Jehovah’s revelation, that is, after Jehovah had spoken, they led the multitudes and taught them that they should show reverence to Jehovah—their God. And Jehovah told them that they should build a temple and an altar, and at the time set by Jehovah, that is, on Passover, they should prepare newborn calves and lambs to place on the altar as sacrifices to serve Jehovah, so as to restrain them and put reverence for Jehovah in their hearts. Whether they obeyed this law became the measure of their loyalty to Jehovah. Jehovah also ordained the Sabbath day for them, the seventh day of His creation. The day after the Sabbath, He made the first day, a day for them to praise Jehovah, to offer Him sacrifices, and to make music for Him. On this day, Jehovah called together all the priests to divide the sacrifices on the altar for the people to eat, so that they could enjoy the sacrifices on Jehovah’s altar. And Jehovah said that they were blessed, that they shared a portion with Him, and that they were His chosen people (which was Jehovah’s covenant with the Israelites). This is why, up to this day, the people of Israel still say that Jehovah is only their God, and not the God of the Gentiles.

—The Word, Vol. 1. The Appearance and Work of God. The Work in the Age of Law