The Promise

First we have the warning, a warning against unbelief. Then we have the appeal, an appeal to hear, believe, obey and share the Word. Then finally the promise.
The promise is a promise of rest. When the Israelites were brought out of Egypt they were brought out to be brought into the promised land, a land of rest but because of their unbelieving hearts they were denied entry. The warning to the Hebrew Christians was that they too were endanger of missing out on the promised rest because of unbelief.