The whole of practical piety (1 Timothy 4:8; 2 Peter 1:6). "It supposes knowledge, veneration, affection, dependence, submission, gratitude, and obedience." In 1 Timothy 3:16 it denotes the substance of revealed religion.

Noah Webster's New International Dictionary of the English Language

(n.) Careful observance of, or conformity to, the laws of God; the state or quality of being godly; piety.