And so it is also with the signal light that is clear and white, the signal of holy example. Let that also shine. As we look carefully at our text, it would seem as if the Master had two spheres in mind when He spoke these words. We are told that when the lamp or candle is put in its proper place and doing its proper work, it gives light to _all_ in the house. There is nothing like household religion. Sometimes professing Christians are very bright and shining lights in public, and quite dark in private, in the home and family circle. The right sort of Christianity shows a pure, clear light amid the troubles, worries, and anxieties of home. It will not do for the wife to be a shining light in society or at the public meeting, and at home be fretful and unkind to her husband, a constant scold and a scare to her children, perpetually complaining and quarreling. It will not do for men to make brilliant speeches on the blessings and benefits of Christianity, if they show no example of it by the fireside. Take care of the home light; let it shine clear there, if anywhere. But not only there! A lady who was once asked to unite with a society of the church, no circumstances or other considerations preventing, declined, replying that she had a society to look after with which none compared. Which is that? "That society is my family." There was truth in that; the family is the chief society. Parents are to exercise a Christian example in the home. Christian discipleship, like charity, begins there. But it does not end there, nor is it restricted there. "No man liveth unto himself, neither alone unto his family." He belongs to his country, to his church, to the world, to mankind at large, and has duties toward them. "Ye are the light of the world," is the language of the Savior. What will men not do to gain followers for a party in politics and otherwise! And in matters of salvation, Church, Gospel, eternal life, we should be timid, silent, diffident, shy, reluctant to open our mouths and assert our convictions, stand aside, and place our convictions under a bushel? Surely, that's not letting the light shine. So much as to the nature and mission of this spiritual light.