"In essentials, unity; in non-essentials, liberty; in all things, charity" is a famous Christian principle, often attributed to 17th-century German theologian Rupertus Meldenius, meaning Christians should agree on core doctrines (unity), allow freedom in secondary beliefs (liberty), and always show love (charity). It promotes focusing on core tenets like the Trinity and Christ's resurrection, while accepting diverse practices, always with an underlying love for fellow believers.
15But the gift is not like the trespass. For if the many died by the trespass of the one man, how much more did God’s grace and the gift that came by the grace of the one man, Jesus Christ, abound to the many! (Romans 5:15 BSB)
