Philippians 4:7

And the peace of God (that peace which reassures the heart, that peace) which transcends all understanding, (that peace which) stands guard over your hearts and minds in Christ Jesus.

Faith plus belief in the Word of God means we are trusting and speaking according to the Word to bring peace to our hearts and minds. If we don’t have peace, we need to check our thoughts and what we are allowing into our minds. Peace comes from a faith-filled life, trusting and walking close to the Lord every day. Keeping our peace requires staying in the Word and being diligent in practicing our faith every day.