Aplomb

Definitions: (1) imperturbable self-possession; poise; (2) complete and certain composure; self-confidence; (3) grace under pressure; (4) upright

Quote: “Behold, I am setting a plumb line in the midst of my people” — The Bible; Amos 7:8
Note: This symbolic plumb line is the standard of justice and righteousness with which God will judge people.