At death, body and soul separate (Ecclesiastes 12:7). On the Last Day, the Lord will raise the bodies of all who died and reunite bodies and souls (John 5:28-29). In the case of Christians, God will glorify their bodies and remove any deficiencies caused by the existence of sin in the world (Philippians 3:21). We will certainly be recognizable to one another.
1 Thessalonians 4:13-18 speaks of the Lord gathering together his followers, never to be separated again.