"When I was a child, I spoke like a child, I thought like a child, I reasoned like a child; when I became an adult, I put an end to childish ways. For now we see in a mirror, dimly, but then we will see face to face. Now I know only in part; then I will know fully, even as I have been fully known" (1 Corinthians 13:11-12).
I think this teaching relates back to verse 8 and the simple, powerful affirmation "Love never ends." He is writing to Corinthians who have become consumed with arguments about church structure and which spiritual gifts are the most important. Paul deals patiently with these questions in the first 12 chapters of the letter. Now, however, he is presenting a spiritual perspective within which such questions are really trivial.
Everything that is a part of this human experience is ephemeral—even including spiritual gifts and knowledge. The only part of our mortality that is eternal is the Power of Love, which is to say, the presence of the Divine. We don't understand because we are seeing everything through the deceptive mirror of our mortal mind. The time will come when we see and clearly understand spiritual Truth.
Now we are spiritual children, playing and thinking from a child's perspective. The time will come when we fully know our true identity as Spirit, and we will leave childish things behind. It's important to note, I think, that it is not wrong to live as children. We don't expect children to act like adults, and we can't expect ourselves to live in full spiritual awareness. The promise is that as long as we remember that love is the only Truth we can experience, we will move inevitably to a full spiritual awareness.