Agreeable to this his one desire, is the one design of his life, namely, “not to do his own will, but the will of Him that sent him.” His one intention at all times and in all things is, not to please himself, but Him whom his soul loveth. He has a single eye. And because “his eye is single, his whole body is full of light.” Indeed, where the loving eye of the soul is continually fixed upon God, there can be no darkness at all, “but the whole is light; as when the bright shining of a candle doth enlighten the house.” God then reigns alone. All that is in the soul is holiness to the Lord. There is not a motion in his heart, but is according to his will. Every thought that arises points to Him, and is in obedience to the law of Christ.
And the tree is known by its fruits. For as he loves God, so he keeps his commandments; not only some, or most of them, but all, from the least to the greatest. He is not content to “keep the whole law, and offend in one point;” but has, in all points, “a conscience void of offense towards God and towards man.” Whatever God has forbidden, he avoids; whatever God hath enjoined, he doeth; and that whether it be little or great, hard or easy, joyous or grievous to the flesh. He “runs the way of God’s commandments,” now he hath set his heart at liberty. It is his glory so to do; it is his daily crown of rejoicing, “to do the will of God on earth, as it is done in heaven;” knowing it is the highest privilege of “the angels of God, of those that excel in strength, to fulfill his commandments, and hearken to the voice of his word.”