In Hebrews 4 we read about the eschatological promise of rest for God’s people.There will come a time when God’s purposes in the world are accomplished and then will come a new heaven and a new earth.
It’s the future promise of entering into the presence of God and in the company of all true believers who have been united to Christ by the Holy Spirit and to one another in their common faith. That promise points to a time when pain will be no more and when there will not be any striving against sin.
While the fulfillment of this promise has not yet come to fruition, we do experience another type of rest now–we can rest in the Gospel.
Those who have placed their faith in Christ are, according to the Westminster Confession of Faith, to find rest in Christ by resting upon the gospel.
Q. 86. What is faith in Jesus Christ?
A. Faith in Jesus Christ is a saving grace, whereby we receive and rest upon him alone for salvation, as he is offered to us in the gospel.
The faith that saves is a gift of God, which permits believers to find rest in the fact that God has, in Christ, done all that is necessary to reconcile them to himself. It is complete, finished, accomplished, secure.
Regardless of what you’re experiencing, you can rest in the hope of the gospel–God’s got it!