The man involved is Lazarus, a very good friend of Jesus (he whom you love, v3), who lived in the town of Bethany
Though the nature of his illness is not given, his condition was serious and death was imminent
Lazarus lived with his sisters, Mary and Martha (see v4)
In desperation, they call for Jesus to come
Once Jesus gets the message, He waits two days
When it comes to death, God’s timing is always perfect