A Substitute has appeared in space and time, appointed by God Himself, to bear the weight and burden of our transgressions, to make expiation for our guilt, and to propitiate the wrath of God on our behalf. This is the gospel.
— R. C. Sproul
So tenaciously should we cling to the world revealed by the gospel, that were I to see all the angels of heaven coming down to me to tell me something different, not only would I not be tempted to doubt a single syllable, but I would shut my eyes and stop my ears, for they would not deserve to be either seen or heard.
— Martin Luther