The Christian’s present life is a preparation for Jesus’ evaluation and reward at the Judgment Seat of Christ. God’s eternal reward is based upon His grace, not our merit. God abounds in loving kindness, so let us live with a view to His gracious promises.
Doctrine matters. What we believe about God changes how we relate to Him and how we live our lives. No church is healthy when it is a safe place for wolves to harm the flock without fear of being confronted.