Original Text
The second vision which he saw, the vision of wisdom--which Enoch the son of Jared, the son of Mahalalel, the son of Cainan, the son of Enos, the son of Seth, the son of Adam, saw.
Simple English
Enoch, the descendant of Adam through Seth, Enos, Cainan, Mahalalel, and Jared, had a second vision. This was a vision of wisdom.