It is one and the same God Whom both the Old and the New Testament proclaim, Who is praised and glorified in the Trinity: I am come, saith the Lord, not to destroy the law but to fulfil it St. Matt. v. 17.. For He Himself worked out our salvation for which all Scripture and all mystery exists. And again, Search the Scriptures for they are they that testify of Me St. John v. 39.. And the Apostle says, God, Who at sundry times and in diverse manners spake in time past unto the fathers by the prophets, hath in these last days spoken unto us by His Son Heb. i. 1, 2.. Through the Holy Spirit, therefore, both the law and the prophets, the evangelists and apostles and pastors and teachers, spake.