Here are 4 Bible verses about having peace from the Old and New Testaments of the Holy Bible (King James Version), sorted from most to least relevant.
Philippians 4:7 KJV
And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus.
Philippians 4:2-7 KJV
I beseech Euodias, and beseech Syntyche, that they be of the same mind in the Lord. And I intreat thee also, true yokefellow, help those women which laboured with me in the gospel, with Clement also, and with other my fellowlabourers, whose names are in the book of life. Rejoice in the Lord alway: and again I say, Rejoice. Let your moderation be known unto all men. The Lord is at hand. Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God. And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus.
John 3:16-27 KJV
For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. For God sent not his Son into the world to condemn the world; but that the world through him might be saved. He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God. And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil. For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved. But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God.After these things came Jesus and his disciples into the land of Judaea; and there he tarried with them, and baptized. And John also was baptizing in Aenon near to Salim, because there was much water there: and they came, and were baptized. For John was not yet cast into prison. Then there arose a question between some of John’s disciples and the Jews about purifying. And they came unto John, and said unto him, Rabbi, he that was with thee beyond Jordan, to whom thou barest witness, behold, the same baptizeth, and all men come to him. John answered and said, A man can receive nothing, except it be given him from heaven.
Titus 3:5 KJV
Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost;