In sharp contrast with our culture, the Bible teaches that the essence of marriage is a sacrificial commitment to the good of the other. That means that love is more fundamentally action than emotion. But in talking this way, there is a danger of falling into the opposite error that characterized many ancient and traditional societies. It is possible to see marriage as merely a social transaction, a way of doing your duty to family, tribe and society. Traditional societies made the family the ultimate value in life, and so marriage was a mere transaction that helped your family’s interest. By contrast, contemporary Western societies make the individual’s happiness the ultimate value, and so marriage becomes primarily an experience of romantic fulfillment. But the Bible sees GOD as the supreme good — not the individual or the family — and that gives us a view of marriage that intimately unites feelings AND duty, passion AND promise. That is because at the heart of the Biblical idea of marriage is the covenant.
– Tim Keller