What exactly does acceptance of Jesus mean in practical terms? Because Matthew 7:21-23 seems to be saying your simplistic interpretation of Christianity is wrong. In fact, doesn't Jesus explicitly state that entrance into the kingdom of heaven can only be achieved by doing the will of his father in heaven?
“Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only the one who does the will of my Father in heaven. Many will say to me on that day, ‘Lord, Lord, did we not prophesy in your name? Did we not drive out demons in your name? Did we not do mighty deeds in your name?’ Then I will declare to them solemnly, ‘I never knew you. Depart from me, you evildoers.’