God has been calling us from the very beginning. Far back in the 3rd chapter of Genesis, when Adam was hiding among the trees of the garden, it was God's Voice which called him out with the searching question, Where art thou? It was as if He said, "Adam, I want you." He is the seeking God still. It was God's Voice that reminded Adam of the holy, happy friendship now broken by sin. Before sin came into the world Adam never listened to any other voice, and now when God is yearning to bring us to Himself, He says, "Listen." That word Listen, or Hearken, comes again and again in the Bible. We find it very often in Isaiah and Jeremiah. When God is pleading with the sinner, that is the word He uses more than any other. In Psalm lxxxi., where God tells us how grieved He is by our waywardness, He says, "Oh that My people had listened or hearkened unto Me." And in Deuteronomy xxviii. 45, He tells them that their troubles have been sent because they would not hearken to the Voice of the Lord their God. I think God has chosen this special way of calling us by His Voice, because it is what we can all understand--it is so simple and so homely. When a boy is disobedient the father calls him, then he talks to him and pleads with him. The father's voice touches the boy's heart. How wonderful it is that God's Voice can reach us, however far off we may be. You have sometimes been to an Open-Air Service, and you have heard the speaker's voice a good way off, but now it has been discovered that any one's voice can travel through the air and be heard above 300 miles away by means of a new apparatus called the wireless telephone. Some time ago a gentleman living in England put a special receiver to his ear and he actually heard a man speaking in France, more than 300 miles away. A year or two ago when the _Titanic_ went down among the icebergs, you remember how the wireless telegraph sent messages to other ships calling for help. This was done by special letters, flashed across the ocean, such as C.Q.D. (come quick, danger) or when the ship was sinking S.O.S. (save our souls). But wonderful as this is, how much more wonderful it is to discover a way by which any one's voice can be heard miles and miles away. Very likely as time goes on and the wireless telephone is more used, you will be able to speak to your father or son far away in Australia or Canada, so that they will not only hear your voice distinctly, but they will answer back, and you will hear their voices just as if you were sitting together again at home. What a wonderful thing it will be to have this close link with them!