Jotham's actions are spoken of as if they were a path upon which he walked. Alternate translation: "the things that he did" (See: [[rc://en/ta/man/translate/figs-metaphor]])
This can be stated in active form. Alternate translation: "they are in the book" or "you can read of them in the book" (See: [[rc://en/ta/man/translate/figs-activepassive]])