If at any time thou come to fight against a city, thou shalt first offer it peace.

then proclaim

2 Samuel 20:18-22 And she again said: A saying was used in the old proverb: They that inquire, let them inquire in Abela: and so they made an end. . . .

Isaiah 57:19 I created the fruit of the lips, peace, peace to him that is far off, and to him that is near, said the Lord, and I healed him.

Zechariah 9:10 And I will destroy the chariot out of Ephraim, and the horse out of Jerusalem, and the bow for war shall be broken: and he shall speak peace to the Gentiles, and his power shall be from sea to sea, and from the rivers even to the end of the earth.

Luke 10:5,6 Into whatever house you enter, first say: Peace be to this house. . . .

Acts 10:36 God sent the word to the children of Israel, preaching peace by Jesus Christ (He is Lord of all).

2 Corinthians 5:18-21 But all things are of God, who hath reconciled us to himself by Christ and hath given to us the ministry of reconciliation. . . .

2 Corinthians 6:1 And we helping do exhort you that you receive not the grace of God in vain.

Ephesians 2:17 And coming, he preached peace to you that were afar off: and peace to them that were nigh.