As we consider faithfulness and look at the definition, we see that a faithful person has five facets to them:
Strict or thorough in the performance of duty – a faithful worker
True to one's word, promises, vows – a faithful spouse
Steady in allegiance or affection; loyal; constant – a faithful friend
Reliable, trusted, or believed – a dependable person
Adhering or true to fact, a standard, or an original; accurate – a faithful account or copy