Translation:

26. And We sent Noah and Abraham and established in their line Prophethood and Revelation: and some of them were on right guidance but many of them became rebellious transgressors.

Notes (Tafseer)

5319. Some of them: i.e., of their line, or posterity, or Ummat. When the Book that was given to them became corrupted, many of them followed their own fancies and became transgressors.