You replies:I'm also worried about this statement. There is no Biblical support for such a claim, plus it also leaves out the whole issue of Eve in the story of the Fall. Jesus tells us in heaven that there is no marriage and Galatians states that in Christ there is neither male nor female. Assuming you meant Eve to be in the picture, why would God create a "woman" for Adam in this spiritual realm to be a helper/wife, when Scripture speaks to the opposite.
Galatians 3:8 indeed says that we are one in Christ Jesus: There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.
Likewise in John 17:21-22, Christ is one in the Father and we are One in Christ: That they all may be one; as thou, Father, [art] in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me. And the glory which thou gavest me I have given them; that they may be one, even as we are one:
This is the mystery of which Paul speaks in Ephesians 5:30-32: For we are members of his body, of his flesh, and of his bones. For this cause shall a man leave his father and mother, and shall be joined unto his wife, and they two shall be one flesh. This is a great mystery: but I speak concerning Christ and the church.
In heaven, it is not about sex or reproduction.