Ephesians 5:32

Rather, "This mystery is a great one." This profound truth, beyond man's power of discovering, but now revealed, namely, of the spiritual union of Christ and the Church, represented by the marriage union, is a great one, of deep import. See on Eph 5:30. So "mystery" is used of a divine truth not to be discovered save by revelation of God (Rom 11:25; Co1 15:51). The Vulgate wrongly translates, "This is a great sacrament," which is made the plea by the Romish Church (in spite of the blunder having been long ago exposed by their own commentators, CAJETAN and ESTIUS) for making marriage a sacrament; it is plain not marriage in general, but that of Christ and the Church, is what is pronounced to be a "great mystery," as the words following prove, "I [emphatic] say it in regard to Christ and to the Church" (so the Greek is best translated). "I, while I quote these words out of Scripture, use them in a higher sense" [CONYBEARE and HOWSON].

We had several important exhortations in the close of the foregoing chapter, and they are continued in this: particularly, I. We have here an exhortation to mutual love and charity (Eph 5:1, Eph 5:2). II. Against all manner of uncleanness, with proper arguments and remedies proposed against such sins: and some further cautions are added, and other duties recommended (v. 3-20). III. The apostle directs to the conscientious discharge of relative duties, from Eph 5:21, throughout this, and in the beginning of the next chapter.

5:32 it is an illustration: Both the unity of husband and wife and the unity of Christ and the church are a great mystery (see study note on 1:8-10).