2293 tharséō (from the root thar-, "bolstered because warmed up," derived from 2294 /thársos, "emboldened from within") – properly, bolstered within which supports unflinching courage – literally, to radiate warm confidence (exude "social boldness") because warm-hearted.

2293 /tharséō ("emboldened to show courage") refers to God bolstering the believer, empowering them with a bold inner-attitude (to be "of good courage"). For the believer, 2293 /tharséō ("showing boldness") is the result of the Lord infusing His strength by His inworking of faith ("inbirthed persuasion," 4102 /pístis). Showing this unflinching, bold courage means living out the inner confidence (inner bolstering) that is Spirit-produced.

["2293 (tharséō) means 'have confidence, courage, be unafraid,' with the nuance determined by the context" (C. Spicq, 2, 188).]