The Doctrine of Justification by Faith

3. The Apostle had before at large declared, who, and what was Gods surety in this matter of the Covenant, and how impossible it was that he should have any other. And this was himself alone, interposing himself by his Oath. For in this cause, because he had none greater to swear by, he sware by himself, chap. 6.13, 14. Wherefore if God would give any other surety besides himself, it must be one greater than He. This being every way impossible, he swears by himself only. Many ways he may and doth use for the declaring and testifying of his Truth unto us, that we may know and believe it to be his Word; and so the Lord Christ in his Ministry was the principal witness of the Truth of God. But other surety than himself he can have none. And therefore,

3. The Apostle had before at large declared, who, and what was Gods surety in this mattter of the Covenant, and how impossible it was that he should have any other. And this was himself alone, interposing himself by his Oath. For in this cause, because he had none greater to swear by, he sware by himself, chap. 6.13, 14. Wherefore if God would give any other surety besides himself, it must be one greater than He. This being every way impossible, he swears by himself only. Many ways he may and doth use for the declaring and testifying of his Truth unto us, that we may know and believe it to be his Word; and so the Lord Christ in his Ministry was the principal witness of the Truth of God. But other surety than himself he can have none. And therefore,

4. When he would have us in this matter not only come unto the full Assurance of Faith concerning his Promises, but also to have strong consolation therein, he resolves it wholly into the Immutability of his counsel, as declared by his Promise and Oath. chap. 6.18, 19. So that neither is God capable of having any surety properly so called, neither do we stand in need of any on his part for the confirmation of our Faith in the highest degree.