Let your conversation be always full of grace, seasoned with salt, so that you may know how to answer everyone.
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Colossians 4:6
Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus. --- Philippians 4:6-7 (NIV)