Romans 4-6

Therefore, since we have been justified through faith, we have peace with God through our Lord Jesus Christ, through whom we have gained access by faith into this grace in which we now stand. And we boast in the hope of the glory of God. (Romans 5:1-2)

Jesus Christ is access to God, providing us with grace to trust. By our trusting in cooperation with divine grace we are put in the kind of intimate fellowship with God for which we humans were created in the first place. Such intimacy with God steeps us in peacefulness and inspires us to hope for increasing incorporation into divine glory.