What a silent world it must have been, for there were none but Noah and his family in all the earth. Noah did not forget how God had saved them, and he made an altar of stone, and offered beasts and birds as a sacrifice. When he looked up to the sky there was a beautiful rainbow. It was God's promise that there should be no more floods upon the earth. He still sends the rainbow to show us that He is taking care of this world, and will always do so. Perhaps the people who lived after this--for Noah's children's children increased very fast--did not believe God's promise, for they began to build a great tower, or temple, on the plain of Shinar; or perhaps they had grown proud and wicked, and wanted a temple for the worship of idols; but the Lord changed their speech, so that they could not understand each other, and they were scattered over other countries; and so each country began to have a language of its own. CHAPTER III. ABRAHAM--THE FATHER OF THE FAITHFUL. The people who lived four thousand years ago were very much like children who easily forget. They told their children about the great flood, but nearly all forgot to tell them of the good God who is the Father of us all, whom we should always love and obey. Yet there is always one, if not more, who remembers God, and keeps his name alive in the world. Abram had tried to do right, though there was no Bible in the world then, and no one better than himself to help him but God, and one day He called Abram, and told him to go away from his father's house into another country. "A land that I will show thee," said the Lord, "and I will make of thee a great nation." He also made Abram a wonderful promise,-- "In thee shall all the families of the earth be blessed." He meant that sometime the Savior should be born among Abram's children's children, and that He should be the Savior of all the nations of the earth. Abram did just what God told him to do. He took Sarai, his wife, and Lot, his nephew, and some servants, and cows, and sheep, and camels, and asses, and went into the land of Canaan. When they rested at night Abram and Lot set some sticks in the ground, and covered them with skins for a tent, and near by they made an altar, where Abram offered a sacrifice, for that was the only way they could worship God when the earth was young. Abram went down into Egypt when there was a lack of food in Canaan, but he came back to Bethel, where he made the altar before, and worshipped God there. He was very rich, for his cattle and sheep had grown into great herds and flocks, though he had sold many in Egypt for silver, and gold, and food. Abram and Lot moved often, for their flocks and herds soon ate up the grass. Then they rolled up the tents, and loaded the camels and asses, and went where the grass was thick and fresh.