This too is a very important question for us to find the answer to and believe, because if we make a mistake in this our eternal life is at stake. There are many who do not believe that Jesus Christ is God and our Redeemer. And there are many who have treated Christ as some kind of mythological creation and therefore subject to reinterpretation and modification so as to adapt to the "person" or the "times".
This question that St. John's disciples asked is therefore an important one for us too, "Is Jesus the Christ or are we to look for another?" The religion that we follow here on earth and the life that we will lead in eternity all depend on understanding the true answer.
The life, words, and works of Jesus Christ give us ample proof of who He is. There are many prophesies pointing to the qualities that the Redeemer would have, and Jesus Christ has fulfilled all of these perfectly. If we just consider the one alluded to by Our Lord Himself in today's Gospel we will see this fulfilment: "God himself will come and save you. Then shall the eyes of the blind be opened; and the ears of the deaf shall be unstopped. Then shall the lame man leap as a hart; and the tongue of the dumb shall be free." Is. 35: 4-6.
Jesus tells us just as he told the disciples of St. John that He performs the very same wonders which, according to the prophet, God Himself, when He should come to redeem man, was to perform; therefore, He must be God and the Redeemer of the world. These miracles in themselves were incontrovertible proofs of the divinity of Jesus; through them God the Father gave testimony that Jesus spoke the truth, when He declared Himself to be His Son and the Redeemer of the world. And Jesus, working all miracles in His own name, also proved in a palpable manner that He possessed divine power, and that, consequently, He was God.
Once true faith has opened up our hearts and minds to this truth, then we see before us a wondrous treasure of the most beautiful divine truths. We see and accept all that He said and did as the most absolute and perfect truths. We see the Church that He has founded as the most beautiful and perfect because He is its founder. We see the authority that He has established in her as the wisest and most perfect of its kind. We see the Sacraments that He has given Her as the most perfect beautiful and powerful means of obtaining all that we need in this world both spiritually and materially and most importantly in making us fit for an everlasting happiness with Him in Heaven. The list of treasures is inexhaustible once we see and believe that Jesus is the Christ the Redeemer of the world.
But sadly, this truth has not been seen and believed by many. Or, perhaps the many refuse to see and believe because of some evil prejudice.
The Judeans who followed their spiritual leaders in rejecting Christ had no excuse before God for their unbelief. The same may be said of the unbelievers of our time. Their incredulity proceeds from an evil heart, and is therefore to be condemned. Let us not be influenced by such as these to become wavering and staggering in the Faith.
We must also be equally if not more cautious of those who use the name of Christ but do not believe in Him. These rather believe in a "Christ" that they have created to their own liking. These do not wish to accept ALL that Jesus has said, but only the parts that they like. They conveniently pick out what they like and refuse what they don't like (smorgasbord or à la carte style religion).
We must accept and believe ALL that Christ has given us to believe, especially that which we find difficult because of the pride and vanity of our fallen nature. We must humble ourselves to accept God Who has come to us in the most humble and lowly means known to us. He comes to us as a helpless baby in a stable; as a criminal condemned to death on the cross; as a sacrificial victim under the appearances of bread and wine upon our altars. We must set aside our pride and vanity and believe what He has said and done, and what He has taught and commanded, simply because He is God. Let us strive to love Him and open our hearts and minds to Him so that we can believe and love Him with even greater faith and love.