From ODB Transformed Hearts:
Proverbs 4:23 AMP
Keep and guard your heart with all vigilance and above all that you guard, for out of it flow the springs of life.
From ODB Uncertain Times:
Philippians 4:7 AMP
And God’s peace [shall be yours, that tranquil state of a soul assured of its salvation through Christ, and so fearing nothing from God and being content with its earthly lot of whatever sort that is, that peace] which transcends all understanding shall garrison and mount guard over your hearts and minds in Christ Jesus.
Heavenly Father, You are all-wise, all-powerful, and
all-loving. In the midst of uncertainties, help me to
rest in the certainty of who You are. I thank You
that Your peace will guard my heart. I place my trust in You.
Isaiah 26:3 AMP
You will guard him and keep him in perfect and constant peace whose mind [both its inclination and its character] is stayed on You, because he commits himself to You, leans on You, and hopes confidently in You.