When Jesus stated that “I and my Father are one”, he was not implying, as some believe, that Jesus and the Father are one and the same. He could not have meant that, because he also have stated: “That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us,” John 17:21.
These two verses prove there are things that the Father knows that the Son does not know. The first verse of the book of Revelation also states the same concept: “The revelation of Jesus Christ, which God gave unto him…”
Revelation 5:1-14 teaches this in pictorial language. In this vision, we see Jesus as a Lamb that had been slain. He was found worthy to open a sealed book that contained God’s plans for the future. The implication is that you also need to be found worthy if you want to understand the book, the Bible, which is in God’s hand. The “book was written within and on the backside” meaning there are two ways of reading the book. There is an outer meaning to the words written, and there is also an inner meaning.
Jesus proved worthy when he faithfully lived and died in sacrifice. Now, only those begotten of the holy Spirit have the ability to read the inner meaning and to understand any scripture in the Bible. 1 Corinthians 2:14, “The person without the Spirit does not accept the things that come from the Spirit of God but considers them foolishness, and cannot understand them because they are discerned only through the Spirit.”
Simply put, Jesus was trying to get across the idea that He and his Father were of the same spirit, the same attitude, the same purpose. Jesus stated plainly: John 14:28, “my Father is greater than I.”