Faithful - Loyal and devoted to someone or something.

Trustworthy - Reliable; deserving of trust or confidence.

Believing - Having faith in a person, idea, or doctrine.

Credible - Worthy of belief; convincing and reliable information.

Committed - Dedicated to a cause, task, or relationship.

A believer in Christ within Christianity.

Faithful person or follower of Jesus.

One who exhibits strong faith and trust.

An individual characterized by belieffulness.

Someone relying on God's promises and truths.