Coming back together after a period of separation.
Joseph and his brothers, and ultimately his father, were all reunited (Gen 45:1-15, 46:29).
The prodigal son came to his senses and returned home (Lk 15:11-31). Was I like that headstrong son, thinking I knew ‘best’ and going into the world, then when I discovered the reality of the situation I realised it was an illusion and quickly returned to the loving embrace of the heavenly Father?
All Christians will be united in heaven with Jesus forever – the ultimate reunion of the creator and His creation (1 Thes 4:13-18). That will be a time of great rejoicing, pictured in the Bible as “The marriage supper of the lamb” (Rev 19:9).
See also: restitution/restore.