In Ephesians 5, Paul shows us that even on earth Jesus did not use his power to oppress us but sacrificed everything to bring us into union with him. And this takes us beyond the philosophical to the personal and the practical. If God had the gospel of Jesus's salvation in mind when he established marriage, then marriage only 'works' to the degree that approximates the pattern of God's self-giving love in Christ.
Timothy KellerUnless we believe the gospel, we will be driven in all we do-whether obeying or disobeying-by pride ('self-love') or fear ('of damnation'). Apart from 'grateful remembering' of the gospel, all good works are done then for sinful motives. Mere moral effort may restrain the heart, but does not truly change the heart. Moral effort merely 'jury rigs' the evil of the heart to produce moral behavior out of self-interest. It is only a matter of time before such a thin tissue collapses.
Timothy KellerReligion: 'My identity is built on being a good person.' Gospel: 'My identity is not built on my record or my performance but on Christ's.'
Timothy KellerTo say doctrine doesn't matter, only how you live matters, is itself a doctrine. It's the doctrine of salvation by works.
Timothy KellerEvery treasure on this earth says, 'Give your life to purchase me.' Jesus says 'I'm the one treasure who died to purchase you.'
Timothy KellerThe image of God carries with it the right not to be mistreated or harmed.... Regardless of their record or character, all human beings have an irreducible glory and significance to them, because God loves them.... So we must treasure each and every human being as a way of showing due respect for the majesty of their owner and Creator.
Timothy Keller