Consistent
From BiblePortal Wikipedia
Consistent [1]
(1): (a.) Living or acting in conformity with one's belief or professions.
(2): (a.) Having agreement with itself or with something else; having harmony among its parts; possesing unity; accordant; harmonious; congruous; compatible; uniform; not contradictory.
(3): (a.) Possessing firmness or fixedness; firm; hard; solid.