2:2 is defined in the Merriam-Webster Collegiate Dictionary as "1: Divine 2: pious, devout -", but in Vines, it is defined as " 'to be devout,' denotes that piety which is characterized by a Godward attitude, does that which is well-pleasing to Him." So we have a fuller meaning of the word by seeing how the word is used in the NT.
The meaning of 2:2 is expanded by examining how it's used in the New Testament, providing a richer understanding beyond the basic definition provided by Merriam-Webster Collegiate Dictionary.