WHAT AGE WILL WE BE IN HEAVEN?
The Bible does not specifically answer this question. Will babies and children who die still be babies / children in Heaven? What about elderly people who die–do they remain elderly in heaven? Some have guessed that babies are given a resurrection body (1 Corinthians 15:35-49) that is “fast-forwarded” to the “ideal age,” just as those who die at an old age are “re-wound” to the ideal age. This would indicate that there won’t be any children or elderly people in heaven.
What is the ideal age? Again, this concept is not specifically biblical. Some believe it to be around 30. Some guess 33 since that is approximately the age Jesus was when He died.
First John 3:2 declares, “Dear friends, now we are children of God, and what we will be has not yet been made known. But we know that when He appears, we shall be like Him, for we shall see Him as He is.”
Thomas Aquinas made the same arguments that Christ when he died he said was 33 and therefore we will all be 33 in the resurrection
What about children who died? Well, we do have those passages in Isaiah 11and Isaiah 65 that seem to clearly have some children on the new earth. And so I think one possibility with that is they could be resurrected at the age they were when they died. If that is the case then God would not fast forward. He would not skip any stage. And I think in some ways that would almost make sense that there would not be a skipping of stages, but that they as children could literally grow up on the new earth.