The closing paragraph of the previous chapter tells us what this defilement stands for; and in the enumeration note the increasing bonds of approximation which each word indicates. An unequal yoke in ill-matched intercourse with unbelievers leads to fellowship, and this to communion, and this again to concord, and this to partnership; whilst the culmination of the entire series is agreement, and the yielding up of the body for the possession and indwelling of idols. let us beware of the beginning of this awful approximation. It is impossible to stand still; and they who think lightly of marrying an unbeliever may in the end hear words like those which watchers heard spoken in the doomed temple on the night before it fell into the hands of Titus. "There was, as it were, the rushing of wings, and voices were heard saying, Let us depart."
There is not only defilement of the flesh, but of the spirit. It is not enough to avoid the gross sins of the outward life. Those of the inner temple and disposition are equally abhorrent to the holiness of God. We must come out and be separate from the latter as well as the former, or we shall never realize what God means when He promises to receive us, and to be a Father to us.
The word cleanse is very decisive in the Greek. It calls for sudden, decisive action; and if you answer, that sin is too closely interwoven with your nature to be thus summarily disposed of, remember that God demands our will only. Directly we are perfectly willing and eager, He steps in and does all the rest. At unknown depths the Spirit of God is at work within us; let us work out what He works in, that we may be welcomed to God's heart.