Peace

When you're lying awake at night thinking about that situation  or  that person, there isn't peace.   

He himself is our peace. (Ephesians 2:14)  The Holy Spirit within us is our comforter in the events of life that keep us awake at night.  Through prayer, we are promised the peace that passeth all understanding.  This peace will guard our hearts and minds in Christ Jesus.  Yes, our hearts and minds need guarding.  Otherwise, we are prone to sleeplessness, self-focus, worry and despair. 

Be anxious for nothing, but in everything by prayer and supplication with thanksgiving let your requests be made known to God.  And the peace of God, which surpasses all comprehension, will guard your hearts and your minds in Christ Jesus. (Philippians 4:6-7)

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Peace I leave with you; my peace I give you. I do not give to you as the world gives. Do not let your hearts be troubled and do not be afraid.  [John 14:27]