The word is used once in the New Testament from root of Greek word chrestos, meaning "useful" as a benefit: "if ye have tasted that the Lord is gracious" (1Pe 2:3).

In the main, however, the adjective is applied in the Old Testament to Yahweh, as indicative of His favor and mercy, His long-suffering and general inclination of favor and kindness.

Walter G. Clippinger