John the apostle repeatedly affirms the preexistence of the Christ and the fact of His authority and power in the antemortal state.[18] To the same effect is the testimony of Paul[19] and of Peter. Instructing the saints concerning the basis of their faith, the last-named apostle impressed upon them that their redemption was not to be secured through corruptible things nor by the outward observance of traditional requirements, "But with the precious blood of Christ, as of a lamb without blemish and without spot: who verily was foreordained before the foundation of the world, but was manifest in these last times for you."[20] Even more impressive and yet more truly conclusive are the personal testimonies of the Savior as to His own pre-existent life and the mission among men to which He had been appointed. No one who accepts Jesus as the Messiah can consistently reject these evidences of His eternal nature. When, on a certain occasion, the Jews in the synagogue disputed among themselves and murmured because of their failure to understand aright His doctrine concerning Himself, especially as touching His relationship with the Father, Jesus said unto them: "For I came down from heaven, not to do mine own will, but the will of him that sent me." And then, continuing the lesson based upon the contrast between the manna with which their fathers had been fed in the wilderness and the bread of life which He had to offer, He added: "I am the living bread which came down from heaven," and again declared "the living Father hath sent me." Not a few of the disciples failed to comprehend His teachings; and their complaints drew from Him these words: "Doth this offend you? What and if ye shall see the Son of man ascend up where he was before?"[21] To certain wicked Jews, wrapped in the mantle of racial pride, boastful of their descent through the lineage of Abraham, and seeking to excuse their sins through an unwarranted use of the great patriarch's name, our Lord thus proclaimed His own preeminence: "Verily, verily, I say unto you, Before Abraham was, I am."[22] The fuller significance of this remark will be treated later; suffice it in the present connection to consider this scripture as a plain avowal of our Lord's seniority and supremacy over Abraham. But as Abraham's birth had preceded that of Christ by more than nineteen centuries, such seniority must have reference to a state of existence antedating that of mortality.