The blindness of unbelievers in no way detracts from the clarity of the gospel; the sun is no less bright because blind men do not perceive its light.
John CalvinThe whole comes to this, that Christ, when he produces faith in us by the agency of his Spirit, at the same time ingrafts us into his body, that we may become partakers of all spiritual blessings.
John CalvinLet it stand, therefore, as an indubitable truth, which no engines can shake, that the mind of man is so entirely alienated from the righteousness of God that he cannot conceive, desire, or design any thing but what is wicked, distorted, foul, impure, and iniquitous; that his heart is so thoroughly envenomed by sin that it can breathe out nothing but corruption and rottenness; that if some men occasionally make a show of goodness, their mind is ever interwoven with hypocrisy and deceit, their soul inwardly bound with the fetters of wickedness.
John CalvinWhen pain and suffering strike, our faith is well founded if it is standing on the promises of God. For all of God's promises have strong confirmation in Christ.
John CalvinScripture will ultimately suffice for a saving knowledge of God only when its certainty is founded upon the inward persuasion of the Holy Spirit. Indeed, these human testimonies which exist to confirm it will not be vain if, as secondary aids to our feebleness, they follow that chief and highest testimony. But those who wish to prove to unbelievers that Scripture is the Word of God are acting foolishly, for only by faith can this be known.
John Calvin