The 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 KellerIt is one thing to say that science is only equipped to test for natural causes and cannot speak to any others. It is quite another to insist that science proves that no other causes could possibly exist. . . . There would be no experimental model for testing the statement: 'No supernatural cause for any natural phenomenon is possible.' It is therefore a philosophical presupposition and not a scientific finding.
Timothy KellerAt the cross, we see the worst that sin can do, as humanity - of which each one of us is a part - crucified the Lord. But at the cross, we also see that the most that sin can do cannot thwart God's salvation.
Timothy Keller