Christ's Promise of Rest for All Who Are Weary

"Come unto me, all ye that labour and are heavy laden, and I will give you rest."
—Matthew 11:28

Here is Christ's personal promise for all who are looking for peace and rest from weariness.

1. The People To Whom the Promise Is Given -- ALL who labour and are heavy laden. What does that mean?

2. The Condition Connected to the Promise -- Only given to those who come to Christ. What does that mean?

3. The Rest that Is Promised -- What is it?