Isaiah 26:3
"Thou wilt keep him in perfect peace, whose mind is stayed on thee: because he trusteth in thee."
Cross References (ranked by relevance)
And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus.
These things I have spoken unto you, that in me ye might have peace. In the world ye shall have tribulation: but be of good cheer; I have overcome the world.
Peace I leave with you, my peace I give unto you: not as the world giveth, give I unto you. Let not your heart be troubled, neither let it be afraid.
And they that know thy name will put their trust in thee: for thou, LORD, hast not forsaken them that seek thee.
Therefore being justified by faith, we have peace with God through our Lord Jesus Christ:
Woe to them that go down to Egypt for help; and stay on horses, and trust in chariots, because they are many; and in horsemen, because they are very strong; but they look not unto the Holy One of Israel, neither seek the LORD!
And this man shall be the peace, when the Assyrian shall come into our land: and when he shall tread in our palaces, then shall we raise against him seven shepherds, and eight principal men.
Were not the Ethiopians and the Lubims a huge host, with very many chariots and horsemen? yet, because thou didst rely on the LORD, he delivered them into thine hand.
Thus the children of Israel were brought under at that time, and the children of Judah prevailed, because they relied upon the LORD God of their fathers.
And they were helped against them, and the Hagarites were delivered into their hand, and all that were with them: for they cried to God in the battle, and he was intreated of them; because they put their trust in him.
For they call themselves of the holy city, and stay themselves upon the God of Israel; The LORD of hosts is his name.