If you ever marry, it is more than probable you will choose a wife among the connections of your friends. If Jehoshaphat’s son Jehoram had not formed a friendship with Ahab’s family, he would most likely not have married Ahab’s daughter.
And who can estimate the importance of a right choice in marriage? It is a step which, according to the old saying, ‘either makes a man or mars him.’ Your happiness in both lives may depend on it. Your wife must either help your soul or harm it: there is no medium. She will either fan the flame of religion in your heart, or throw cold water upon it, and make it burn low. She will either be wings or fetters, a rein or a spur to your Christianity, according to her character. He that findeth a good wife doth indeed ‘find a good thing;’ but if you have the least wish to find one, be very careful how you choose your friends.
From Thoughts for Young Men (from Ryle's book: The Upper Room [Carlisle, PA: Banner of Truth, 1970], 407).