"For the Son of man shall come ..." (Matt. 16:27); "... so shall also the coming of the Son of man be." (Matt. 25:27); "... so shall also the coming of the Son of man be" (Matt. 25:39); ""...the Son of man cometh." (Matt. 25:44); "... the Son of man cometh." (Matt.25:19); "And I will pray the Father, and he shall give you another Comforter ... Even the Spirit of truth" (John14:16-17); "I have yet many things to say unto you, but ye cannot bear them now. Howbeit when he, the Spirit of truth, is come, he will guide you into all truth..." (John 16:12-13);
Note Christ's choice of words in the following passage: "I am Al'pha and O'mega, the beginning and the end, the first and the last." (Rev. 22:13). I have heard people interpret this to mean that Christ is the "only". Yet, he uses the metaphor of the alphabet which contains many letters. If one judges the words of Christ with fairness, s/he will realize that Christ is telling us that there are many Manifestations of God, and the Spirit of Christ is present in all of them, the first and the last.
These are but a drop in an ocean of references to the return of Christ in the Bible. The whole purpose of the Gospel (Glad Tidings) is to prepare us for this day in which the Promised One has come. And Christ has given us a simple test by which to establish the truth of One who might claim to be that Promised One: "By their fruits ye shall know them." (Matt. 7:20). I invite you to investigate the activities of the Baha'is, and judge them by their fruits as Christ instructs you.
Please note that I reference the Bible solely for your sake. For, it is through the teachings of Baha'u'llah that I am affirmed of the reality of Christ, not the other way around.