Mainstream Christians mostly seem offended by this statement. They may see it as enormously egotistical. Those of a more fundamentalist stripe might say something like:
You are not God! You are not the Creator of the Universe! Who do you think you are!
Those a little familiar with New Age thought may not see this as a claim to being the one, the only, and the almighty God in one person incarnate. They see it more as being one with that God. They don’t see it as a claim to be the whole entity that is God, but rather a part of it. Author Joseph J. Dewey put it this way:
A drop of water is insignificant when it is removed from a giant wave, but when it is joined back into the wave and cooperates with it, it then becomes the wave. We are like drops of water that have separated from the Life wave we call God. When we join back in with the God wave we become one with it and we can say with all the other billions of lives: “I am the wave” or “I AM God“. We have not lost the molecules that have made us the drop. We still have our identity, but we also have much more. We are one with something much greater than ourselves (as drops) to the extent we actually become the wave. We are a wave, yet millions of drops combined. We are God, yet millions of human drops combined. No life is separated from the life which is God.
The Christian Apostle Paul alluded to this:
For as the body is one, and hath many members, and all the members of that one body, being many, are one body: so also is Christ. For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit. For the body is not one member, but many.
God is both one, and many. There is only one God but it is composed of many members. And again from Paul:
Let this mind be in you, which was also in Christ Jesus: Who, being in the form of God, thought it not robbery to be equal with God:
We are all “in the form” God, like Jesus, and it is not a crime to understand our equality to God in the sense of being part of God.
We are all members in the same body that is God. We are equal as drops in a giant wave. We become one with God when we seek its will. We become one with God when we cooperate with the wave and not resist it.