Some examples of the changes to the text of the mass:
Priest: "The Lord be with you." People: "And also with you."
New: Priest: "The Lord be with you." People: "And with your spirit"
Old: "Glory to God in the highest, and peace to his people on earth."
New: "Glory to God in the highest, and on earth peace to people of good will."
Old: People: "Lord, I am not worthy to receive you, but only say the word and I shall be healed."
New: People: "Lord, I am not worthy that you should enter under my roof, but only say the word and my soul shall be healed."