The words "exhorting," "comforting," and "solemnly charging" are used together to express how passionately Paul's group exhorted the Thessalonians. Alternate translation: "strongly exhorted you" (See: [[rc://en/ta/man/jit/figs-doublet]])
"Walk" here is an metaphor for "live." Alternate translation: "to live so that people will think well of God" (See: [[rc://en/ta/man/jit/figs-metaphor]])