Hast thou marked the old way which wicked men have trodden? rather, Wilt thou keep the old way' etc.? (see the Revised Version). Eliphaz assumes that it is Job's intention to cast in his lot with these persons whose prosperous wickedness he has described in the preceding chapter (verses 7-15).
And this notwithstanding Job's final protest, "Be the counsel of the wicked far from me" (verse 16). He calls the mode of life pursued by these wicked persons "the old way," either with allusion to the seed of Cain before the Flood, who "corrupted their way" (Genesis 6:12), or perhaps with reference to the descendants of Nimrod after it.