“Therefore a man shall leave his father and mother and hold fast to his wife, and the two shall become one flesh.”
31. For this cause. This is an exact quotation from the writings of Moses. (Genesis 2:24.) And what does it mean? As Eve was formed out of the substance of her husband, and thus was a part of himself; so, if we are the true members of Christ, we share his substance, and by this intercourse unite into one body.
Here the apostle begins his exhortation to the discharge of relative duties. As a general foundation for these duties, he lays down that rule Eph 5:21. There is a mutual submission that Christians owe one to another, condescending to bear one another's burdens: not advancing themselves above others, nor domineering over one another and giving laws to one another.
Commenting on Ephesians 5:21-33
Verse 31. For this cause. αντιτουτου. This verse is a quotation from , and contains the account of the institution of marriage. The meaning of the phrase rendered "for this cause," is, "answerably to this;" or corresponding to this--that is, to what Paul had just said of the union of believers and the Redeemer. On the meaning of this verse, .