Ephesians 5:31

For this cause. — In spite of much authority, it seems far simpler to consider the words “Even as the Lord... His bones” as parenthetical, and refer back to Ephesians 5:28. In exactly the same way our Lord quotes the same verse of Genesis (Genesis 2:24) to show the indissoluble character of the marriage tie. Here the similarity of connection with that of the original passage is even stronger. Because a man’s wife is as his own body, “for this cause shall a man,” &c. To connect these words with those going before is indeed possible, but somewhat too mystical even for this passage.

Shall a man leave his father... — The relation of parentage is one of common flesh and blood, and stands at the head of those natural relations which we do not make, but into which we are born. The relation of marriage is the most sacred of all the ties into which we are not born, and which we do make for ourselves, in accordance with a true or supposed harmony of nature. It becomes, says Holy Scripture, a relation, not of common flesh and blood, but of “one flesh.” Itself originally voluntary, it supersedes all natural ties. Our Lord therefore adds, “They are no more twain, but one flesh. What God hath joined together let not man put asunder” (Matthew 19:6). Hence it strikingly represents that unity with Christ — voluntarily initiated by Him, voluntarily accepted by us — which yet so supersedes all natural ties that it is said to oblige a man to “hate his father and mother... and his own life also” (Luke 14:26).