What does the Bible say about peace in believing?

According to Romans 15:13, the God of hope fills believers with all joy and peace in believing. This signifies that true joy and peace are not found in worldly pursuits but in faith in Christ. As believers trust in God, they receive peace that abounds through the power of the Holy Spirit, leading to a life marked by hope and assurance. This peace is rooted in the promise of salvation and the righteousness of Christ, which surpasses all understanding and comforts the soul amidst life's trials.