It is inaccurate to think the gospel is what saves non-Christians, and then Christians mature by trying hard to live according to biblical principles. It is more accurate to say that we are saved by believing the gospel, and then we are transformed in every part of our minds, hearts, and lives by believing the gospel more and more deeply as life goes on.
Timothy KellerLife in this fallen world is to a great degree meaningless, our aspirations are constantly being frustrated, and sometimes the respectable people are oppressive and bigoted. And yet there is a Good that will triumph over Evil in the end. From a Christian perspective the problem with both kinds of stories is that they tend to blame problems on things besides sin and identify salvation in things besides God — and therefore are ultimately too simplistic.
Timothy KellerRevival occurs as a group of people who, on the whole, think they already know the gospel discover they do not really or fully know it, and by embracing the gospel they cross over into living faith.
Timothy KellerThe gospel shows us that our spiritual problem lies not only in failing to obey God, but also in relying on our obedience to make us fully acceptable to God, ourselves and others. Every kind of character flaw comes from this natural impulse to be our own saviour through our own performance and achievement. On the one hand, proud and disdainful personalities come from basing your identity on your performance and thinking you are succeeding. But on the other hand, discouraged and self loathing personalities also come from basing your identity on your performance and thinking you are failing.
Timothy KellerThe secret to freedom from enslaving patterns of sin is worship. You need worship. You need great worship. You need weeping worship. You need glorious worship. You need to sense God’s greatness and to be moved it — moved to tears and moved to laughter — moved by who God is and what he has done for you.
Timothy Keller