If you believe the Bible then you will believe his word, he created Man and woman in his image and he also said this after the flood of Noah. So, being in the image is not being or becoming God, it just the likeness in the visual sense. You have a piece of God in you breath and spirit unless you burn it out of yourself. You either believe or you do not.

No one said you look exactly like God, only the image, what would that be, head, arms, legs, and all we have. Mind, soul body and spirit, your body is a temporary thing, it goes back to the earth, in other words, soil, rocks etc.. Your whole recorded being shaped as it is now, you are going to be you with another body, and it has to do with how you live here.