Let 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 CalvinNow the great thing is this: we are consecrated and dedicated to God in order that we may thereafter think, speak, meditate, and do, nothing except to his glory. For a sacred thing may not be applied to profane uses without marked injury to him.
John CalvinBut we have nothing of the Spirit except through regeneration. Everything, therefore, which we have from nature is flesh.
John CalvinThe sum is, that the worship of God must be spiritual, in order that it may correspond with His nature. For although Moses only speaks of idolatry, yet there is no doubt but that by synecdoche, as in all the rest of the law, he condemns all fictitious services which men in their ingenuity have invented.
John CalvinThough Satan instils his poison, and fans the flames of our corrupt desires within us,we are yet not carried by any external force to the commission of sin, but our own flesh entices us, and we willingly yield to its allurements.
John CalvinWithout knowledge of self there is no knowledge of God Our wisdom, in so far as it ought to be deemed true and solid Wisdom, consists almost entirely of two parts: the knowledge of God and of ourselves. But as these are connected together by many ties, it is not easy to determine which of the two precedes and gives birth to the other.
John Calvin