There is no doubt that blessed John suffered imprisonment and chains as a witness to our Redeemer, whose forerunner he was, and gave his life for him. His persecutor had demanded not that he should deny Christ, but only that he should keep silent about the truth. Nevertheless, he died for Christ. Does Christ not say: “I am the truth”? Therefore, because John shed his blood for the truth, he surely died for Christ. Through his birth, preaching and baptizing, he bore witness to the coming birth, preaching and baptism of Christ, and by his own suffering he showed that Christ also would suffer. Such was the quality and strength of the man who accepted the end of this present life by shedding his blood after the long imprisonment.
-- Saint Bede the Venerable on the death of John the Baptist