He taught them also about the prophets. The prophets were preachers whose words had long ago been written down in the sacred Scriptures. These books were long pieces of skin, which were kept rolled up when no one was reading them. There were many prophets--Isaiah, Jeremiah, Ezekiel, Amos, Malachi, and many others. Little by little the boys began to discover what these preachers had said. [Illustration] The teacher also made sure that they knew about that part of the Scriptures called the Law. The Ten Commandments were in the Law, and many other sayings which told people what they must do and what they must not do in order to please God. The boys learned how God gave the Commandments to Moses, while lightning flashed and thunder crashed, at the far-off mountain of Sinai. The teacher told them stories of all that had happened to the Jewish people in the years gone by. But the most important was the story of the Passover. This story explained why their parents went to Jerusalem each spring. Now this was what every Jewish boy had to learn about the Passover, and remember always: Once there was a time, hundreds of years before, when the Jews did not live in Palestine. They lived in Egypt, where they were slaves. They wanted to escape, so that they might have a country of their own where they could be free. One spring night God sent a disease into Egypt, and thousands died of it. There was not an Egyptian home where the oldest child in the family did not die. But none of the Jews died. Therefore, they said that God _passed over_ their doors that night. Then there was a great uproar and clamor in Egypt, with the Egyptians weeping, and nursing their sick, and burying their dead. The time had come for the Jews to get away. Under their leader, Moses, they began their long journey toward Palestine. The Jewish people never forgot what God did for them in Egypt. So in the spring of each year was held the Feast of the Passover, to give thanks to God for the help he had given them long ago. They gathered together and sang: [Illustration] "O give thanks unto the Lord, for he is good: For his mercy endureth for ever." To the Passover feast every family brought a lamb to be killed as a sacrifice to God. Only the best could be given to God. They chose a lamb that was white, and pure, and fine, and precious. Then they roasted the lamb, and ate it. What a feast they had, so solemn and so joyful, as they remembered all that God had done! Everyone knew the best place to hold the Passover feast was at Jerusalem. Therefore, every year, when spring came round, the people said to one another, "It is Passover time," and as many as could leave their homes went up to the great city. When the boys heard the story, they understood why their parents went there in the spring.