Sure or Cocky?

It is a good thing to be firm in Christ, absolutely sure of His grace, presence, and power. However, we should always be alert to keep the flesh from sowing its seed in our confidence. Pride will sprout, cockiness will flower ...

and we are then ripe for the fall.

(Mk. 14:31, But he spake the more vehemently, If I should die with thee, I will not deny thee in any wise.)