Zacharias Ursinus (1534–1583) Answers "What is the Gospel?"

The gospel is, therefore, the doctrine which the Son of God, our Mediator, revealed from heaven in Paradise, immediately after the fall, and which he brought from the bosom of the Eternal Father; which promises, and announces, in view of the free grace and mercy of God, to all those that repent and believe, deliverance from sin, death, condemnation, and the wrath of God; which is the same thing as to say that it promises and proclaims the remission of sin, salvation, and eternal life, by and for the sake of the Son of God, the Mediator ; and is that through which the Holy Spirit works effectually in the hearts of the faithful, kindling and exciting in them, faith, repentance, and the beginning of eternal life. Or, we may, in accordance with the eighteenth, nineteenth, and twentieth questions of the Catechism, define the gospel to be the doctrine which God revealed first in Paradise, and afterwards published by the Patriarchs and Prophets, which he was pleased to represent by the shadows of sacrifices, and the other ceremonies of the law, and which he has accomplished by his only begotten Son; teaching that the Son of God, our Lord Jesus Christ, is made unto us wisdom, righteousness, sanctification, and redemption; which is to say that he is a perfect Mediator, satisfying for the sins of the human race, restoring righteousness and eternal life to all those who by a true faith are ingrafted into him, and embrace his benefits.

The following passages of Scripture confirm this definition which we have given of the gospel: "This is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life and I will raise him up at the last day." "And that repentance and remission of sin should be preached in his name, among all nations, beginning at Jerusalem." "The law was given by Moses, but grace and truth came by Jesus Christ." (John 6:41. Luke 24:47. John 1:17.)

The Commentary of Dr. Zacharias Ursinus on the Heidelberg Catechism, trans. G. W. Willard (Phillipsburg: Presbyterian and Reformed Publishing, n.d.), 101–102.

Bio:
Wiki