You are reading a tafsir for the group of verses 70:15 to 70:35
These verses give a brief description of the qualities of two types of human beings: those who will be treated as entitled to enter Paradise and those whose deeds will cause them to be thrown into Hell on Doomsday.
He has revealed to you ˹O Prophet˺ the Book in truth, confirming what came before it, as He revealed the Torah and the Gospel