But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin.
Ver. 7. We have fellowship one, &c.] That is, God and we; inasmuch as we are made partakers of the divine nature, and are pure as God is pure, 1 John 3:3, in quality though not in an equality. We have fellowship with God: 1. In his holiness. 2. In his happiness.
And the blood of Jesus] That whereas God's pure eye can soon find many a foul flaw in the best of us (our righteousness being mixed, as light and darkness, dimness at least, in a painted glass, dyed with some obscure and dim colour, it is transparent and giveth good, but not clear and pure light), lo, here is a ready remedy, a sweet support, "the blood of Jesus Christ his Son cleanseth us from all sin." And God beholding us in the face of his Son, seeth nothing amiss in us; no more than David did in lame Mephibosheth, when he beheld in him the features of his friend Jonathan.