ANSWER: Jesus said in John 10:30 "I and My Father are one."
Jesus here revealed that there is one Godhead, or one God Family, and that its members work together with one mind and purpose.
That Family is presently comprised of two Beings, God the Father and His Son, Jesus Christ. This is clearly stated in John 1:1 "In the beginning was the Word, and the Word was with God, and the Word was God." The "Word" or "Spokesman" was the one who later became Jesus Christ (John 1:14).
Hebrews 1:1-4 also shows that Christ was, and now is, God. "God, who at various times and in different ways spoke in time past to the fathers by the prophets, has in these last days spoken to us by His Son, whom He has appointed heir of all things, through whom also He made the worlds; who being the brightness of His glory and the express image of His person, and upholding all things by the word of His power, when He had by Himself purged our sins, sat down at the right hand of the Majesty on high, having become so much better than the angels, as He has by inheritance obtained a more excellent name than they." In verse 6 God says of Christ, "Let all the angels of God worship Him." Only a member of the God Family is worthy of worship.
But, the God Family is not limited to God the Father and Jesus Christ. Hebrews 2:7-8 shows that man, like Christ, was made for a while "a little lower than the angels," but that he is to be crowned "with glory and honor." Everything will be put "in subjection under his feet," "but now we do not yet see all things put under him," because the resurrection to immortality has not yet occurred.
The Family of God, then will eventually be expanded to include all who choose God's way. "Beloved, now we are children of God; and it has not yet been revealed what we shall be, but we know that when He is revealed, we shall be like Him, for we shall see Him as He is" (I John 3:2). The Apostle Paul adds, "For this corruptible must put on incorruption, and this mortal must put on immortality" (I Corinthians 15:53). This verse plainly states that resurrected Christians, like Christ, will be immortal. When we are changed our mortal bodies will become spirit bodies like His (Philippians 3:20-21; I Corinthians 15:43-54; Romans 8:18-19). The Father and the Son are one united, holy Family. At the resurrection we will be born into the one God Family and become one with God.
Christ and His Father were "one being," or "one entity." The following Scriptures should convince any rational person of the utter absurdity of this claim:
1) Jesus was begotten by His Father (Hebrews 1:5). Did He beget Himself?
2) When Jesus prayed to His Father (John 17:1-26), did He pray to Himself?
3) When Christ said His Father was greater than He was (John 14:28), did He mean that He was greater than Himself?
4) When Jesus cried out, "My God, My God, why have you forsaken Me?" (Matthew 27:46), did He imply that He had forsaken Himself?
5) When Christ ascended to heaven after His resurrection (John 20:17), did He ascend to Himself?
6) When the Father said to His Son that He was to sit at His right hand until His enemies became His footstool (Matthew 22:44) did this mean Jesus was to sit on His own right hand?
7) When Jesus answered His disciples' question about when He would return by saying, "Of that day and hour no one knows not even the angels of heaven, but My Father only" (Matthew 24:36), did Jesus mean that He Himself actually knew the day and hour but just made up an excuse to avoid telling them?