QUES: In that prayer she will bring us to encounter Christ and through Him with Him and in Him the world will be transformed

correct the punctuation.

CORRECTED: In that prayer, she will bring us to encounter Christ, and through Him, with Him, and in Him, the world will be transformed.

QUES: But such development requires the abolition of social antagonisms

correct the punctuation.

CORRECTED: But such development requires the abolition of social antagonisms.

QUES: Healthy and happy employees would mean more productivity energy and positivity at the workplace

correct the punctuation.

CORRECTED:
Healthy and happy employees would mean more productivity, energy and positivity at the workplace.