Philippians 4:4-7 New International Version (NIV)
4 Rejoice in the Lord always. I will say it again: Rejoice! 5 Let your gentleness be evident to all. The Lord is near. 6 Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. 7 And the peace of God,which transcends all understanding, will guard your hearts and your minds in Christ Jesus.