We see in a mirror, dimly, but then face to face. Now I know in part, but then I shall know just as I also am known.
— 1 Corinthians 13:12
The Bible tells us that one day, in heaven, we will know as we are known (see 1 Corinthians 13:12).
For the time being, I don't have a complete knowledge of life beyond this life. The fact of the matter is, there's so much about the person of God, His ways, and His dwelling place that I don't know. But one day in a new body, I will see Him face-to-face, and all of my questions will be answered.
The apostle Paul had a remarkable experience in which he died and then was revived (see Acts 14:19-20). This wasn't a near-death experience; Paul literally died. But he didn't write a book about it or go on the talk show circuit. He basically said, "I was caught up into the third heaven and heard things that I can't even describe to you, but it was paradise" (see 2 Corinthians 12:2). That's all he would say.
It does appear, however, that we will recognize one another in heaven. After all, when Moses and Elijah met with Jesus on the Mount of Transfiguration, the disciples recognized them immediately. So you might ask, "How will I know you if I'm looking for you?" Well, look for the guy with the full head of brand-new hair. That will be me.
Yes, someday very soon we will be with the Lord. And though we don't know a great deal about heaven now, we can be sure its reality will exceed our wildest dreams. We will see the Lord, and we will see one another. And all of the mysteries will be solved.