Isaiah 26:1-9 KJV
1 In that day shall this song be sung in the land of Judah;
“We have a strong city; salvation will God appoint for walls and bulwarks.
2 Open ye the gates, that the righteous nation which keepeth the truth may enter in.
3 Thou wilt keep him in perfect peace, whose mind is stayed on thee: because he trusteth in thee.
4 Trust ye in the Lord for ever: for in the Lord Jehovah is everlasting strength:
Isaiah 26:3
3 Thou wilt keep him in perfect peace, whose mind is stayed on thee: because he trusteth in thee.
John 16:26
At that day ye shall ask in my name: and I say not unto you, that I will pray the Father for you:
27 For the Father himself loveth you, because ye have loved me, and have believed that I came out from God.
28 I came forth from the Father, and am come into the world: again, I leave the world, and go to the Father.
… 33 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.
Philippians 4:7
And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus.
Romans 5:1
Therefore being justified by faith, we have peace with God through our Lord Jesus Christ:
John 14:25-27
25 These things have I spoken unto you, being yet present with you.
26 But the Comforter, which is the Holy Spirit, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you.
27 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.
1Corinthians 2:14
But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.