It was a very simple weapon; and doubtless he had often practised slinging stones, as he sat watching his sheep, and knew how to aim well. And, if we want to conquer Satan when he tempts us to do wrong, we must take the weapon God has given us to use—which is His own word. Just say, "Lord, help me!" or "Lord, save me!" and Satan will be driven away. I shall never forget being called to comfort a dear dying girl, who was much worried by Satan's suggestions. I stood by her bedside and quietly repeated these words of God to her, from Isaiah 59.19: "When the enemy shall come in like a flood, the Spirit of the Lord shall lift up a standard against him." In a moment the cloud of sorrow and fear passed from her face; and God never let Satan worry her again! So you will find God's words will be just like David's smooth stones, when he went up to meet the Giant! [Illustration: DAVID GOES TO MEET GOLIATH.] And Goliath said, "Am I a dog that thou comest to me with staves? Come to me, and I will give thy flesh to the fowls of the air, and to the beasts of the field!" Then David answered, "Thou comest to me with a sword and with a shield, but I come to thee in the Name of the Lord of hosts, the God of the armies of Israel whom thou hast defied. This day will the Lord deliver thee into my hand . . . and I will smite thee, and take thy head from thee. For the battle is the Lord's." So, as the Giant came forward towards David, David ran to meet him, and put his hand into his bag and took a stone, and slang it, and it hit the Giant on his forehead, so that he sank down on the ground on his face. Then David ran, and took Goliath's own sword, and cut off his head with it. And when the Philistines saw that their Champion was dead, they fled, and the Israelites followed after them and the Victory was won. [Illustration] XVII. THE FIRST AND SECOND COMMANDMENTS: AND HOW THEY WERE BROKEN "I am the Lord thy God, Which have brought thee out of the land of Egypt, out of the house of bondage." _I. "Thou shalt have no other gods before Me."_ _II. "Thou shalt not make unto thee any graven image, or any likeness of any thing that is in heaven above, or that is in the earth beneath, or that is in the water under the earth: thou shalt not bow down thyself to them, nor serve them: for I the Lord thy God am a jealous God."_ THE Children of Israel had left Egypt. God had brought them out with a strong hand. They had left their enemies the Egyptians, some of them dead in their houses, for all the firstborn were dead; and some of them overwhelmed in the Red Sea, where they had attempted to follow the Israelites, for whom God had made a way on dry ground, through the midst of the waters. And now God had led them about in the wilderness, for they were obstinate and disobedient, and He could not let them go into the Promised Land of Blessing, because their hearts were too hard to learn His great lessons.