Definition of Nicolaitan.
1 : one of a group reproved in Revelation 2:6, 14–15 and generally associated with those who were rebuked for eating things offered to idols and for fornication.
2 : one of a group of 3d century antinomian Gnostics.
adjective
adjective: antinomian
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1.
relating to the view that Christians are released by grace from the obligation of observing the moral law.
noun
noun: antinomian; plural noun: antinomians
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1.
a person holding antinomian beliefs.
Moral law is a system of guidelines for behavior.
These guidelines may or may not be part of a religion, codified in written form, or legally enforceable.
For some people moral law is synonymous with the commands of a divine being.
For others, moral law is a set of universal rules that should apply to everyone.