Believers in Jesus, as we read in the Scriptures, are all children of the light, and children of the day, and are privileged to walk in the light, as God is the light, God Himself being their everlasting light, and their God their glory. Thus walking in the light, they have fellowship one with ather; and more than this, with the Father, and with His Son Jesus Christ. Abiding in this light and in this fellowship, their joy is full, out of weakness they are made strong, in all conditions of existence they find perfect content, and are more than conquerors through Him that hath loved us, and having all sufficiency for all things, are abundantly furnished for every good work. If all this is t true of any believer, it is because he is living below his revealed privileges, and is thus living because he does t kw the things which are freely given us of God. It contradicts every true idea of Christian character, to suppose that a true believer in Christ will walk in darkness, kwing that he may walk in the light; will remain weak, kwing that he may be girded with everlasting strength; and will continue carnal, sold under sin, kwing that he may enjoy the glorious liberty of the sons of God. The specific and exclusive object of the following treatise is to make kwn to all who would kw and understand their privileges as the sons of God and believers in Jesus, the forms of divine kwledge above referred to. To the prayerful examination of all who are walking in the light, or are inquiring after the light, the work is commended, with the fervent desire and prayer of the author, that their joy may be full. ASA MAHAN (1799-1889) was America's foremost Christian educator, reformer, philosopher, and pastor. He was founding president of two colleges and one university, where he was able to inspire numerous reforms, publish authoritative philosophical texts, and promote powerful revivals like his close associate Charles Finney. He led the way on all important fronts while being severely persecuted. He introduced the new curriculum later adopted by Harvard, was the first to instruct and grant liberal college degrees to white and colored women, advised Lincoln during the Civil War, and among many other remarkable achievements, was a father to the early evangelical and holiness movements.