Let us receive nothing, believe nothing, follow nothing which is not in the Bible, nor can be proved by the Bible.
J. C. RyleWhat could an unsanctified man do in Heaven, if by any chance he got there? Let that question be fairly looked in the face and fairly answered. No man can possibly be happy in a place where he is not in his element and where all around him is not congenial to his tastes, habits and character.
J. C. RyleA sin...consists in doing, saying, thinking, or imagining anything that is not in perfect conformity with the mind and law of God
J. C. RyleHoliness is the habit of being of one mind with God, according as we find His mind described in Scripture. It is the habit of agreeing in God's judgment, hating what He hates, loving what He loves, and measuring everything in this world by the standard of His Word.
J. C. RyleBeware of manufacturing a God of your own: a God who is all mercy, but not just; a God who is all love, but not holy; a God who as a heaven for every body, but a hell for none; a God who can allow good and bad to be side by side in time, but will make no distinction between good and broad in eternity. Such a God is an idol of your own, as truly an idol as any snake or crocodile in an Egyptian temple. The hands of your own fancy and sentimentality have made him. He is not the God of the Bible, and beside the God of the Bible there is no God at all.
J. C. Ryle