"His perfect life has now been credited to you. In light of that, do you really feel like you could make God more favorable to you by doing your quiet time every day? Christ’s obedience is so spectacular there is nothing we could do to add to it; His death so final that nothing could take away from it... Satan’s primary temptation strategy is to try and make us forget what God has said about us and to evaluate our standing before God by some other criteria."
J.D. Greear, Gospel: Recovering the Power that Made Christianity Revolutionary