" . . . Do you believe this?"
Our Lord Jesus asked this question (above), of Martha, the sister of Lazarus. Christ is asking her if she believes a body of doctrine that He had just taught her--regarding Himself (Jesus), the potency (power) of faith, and the resurrection of the dead.
Such is the nature of all good doctrine, and of the churchman's belief in it: when rightly-construed it (good doctrine) always directs the believer to the Person of Jesus. The difference between a regenerated Christian and the devil himself, is not that we believe different things--but that the churchman's faith resides ultimately in the Person of the Redeemer (Jesus).
[Puritan quote of the day: "A man by faith may come into the presence of God with open mouth and speak all his mind unto God."
--William Bridge, in "A Lifting Up for the Downcast"]