The creation of mankind described in the book of Genesis of the Old Testament Bible clearly states that God made man in his image (1:26-28). In our current knowledge of genetics, the creation of mankind by God suggests he used some of his DNA to genetically engineer human beings from apes, which explains how humans and chimpanzees share 99.8% of the same genes as the genetic difference between humans and chimps is less than 2%. In our modern day theology, it is generally unclear whether God is a corporal being, or a great amorphous spirit without a face. However, in the Book of Revelations in the New Testament Bible, it is stated that God will "walk with man" for a thousand years, suggesting God has a physical form, not dissimilar to that of human beings (20:6). It is unknown whether God is always in physical form, or whether he transforms himself to enter a corporal body, such as what happened to Jesus Christ in his resurrection as reported in the four Gospels in the New Testament Bible. However, as Jesus was able to be a physical being to interact with humans, so much greater would his Father in Heaven be?