Where does peace begin? Is eternal peace possible? How?
The Bible is the Only Religious Document vetted by the fulfillment of prophecy.
Peace begins with acceptance of this statement. Peace, Where Does It Begin? By knowing the Bible is the only Book inspired by God Himself.
Jesus was a sinless peaceful man who taught his followers would be united by a relationship with His father, Jehovah God. Because of an accelling relationship with Him, None of his followers would want to disappoint Him. Just as a man and woman should honor the marriage bed because of their love for each other. By their love for their mate, they conquer their selfish desires, they would not want anything to grieve their mate and cause distress or divorce in the eternal relationship. A follower of Christ is loyal to the principles of God as if they were were married to God. They hate violence, as Jehovah God does as stated at Psalms 11:5 Jehovah examines the righteous one as well as the wicked one; He hates anyone who loves violence.
*
Proverbs 6:16-19: “There are six things that Jehovah hates; Yes, seven things that he detests:17 Haughty eyes, a lying tongue, and hands that shed innocent blood,18 A heart plotting wicked schemes, and feet that run quickly to evil,19 A false witness who lies with every breath, And anyone sowing contentions among brothers.”
*
This loyalty should assure every other witness of this truth that I would never raise my hand against any of them, in spite of nationality. Like Christ, I will evade violence to the best of my ability. This mindset promotes unity, resulting in peace among a global brotherhood.
*
Peace begins with loyalty to Jehovah God, we are as sheep, gathered under the direction of His Shepherd, Christ Jesus. God is one, He has one herd, one mind, one teaching. His sheep are all assembled as one, as God’s fleshly wife, united as one, we submit every thought to His scrutiny and strive to obey the law inspired by love for God and neighbor.
*
Matthew 22:37: “”He said to him: “‘You must love Jehovah your God with your whole heart and with your whole soul and with your whole mind.’38 This is the greatest and first commandment.39 The second, like it, is this: ‘You must love your neighbor as yourself””

*

Where does peace begin? It begins with a real relationship with Jehovah God. The desire to be pleasing in His eyes must be stronger than any selfish desire, any hate, any revenge, any war. By this peace is established as an eternal condition among the real sheep of God.

How can peace be Eternal? Those cultivating a real relationship with God will cultivate all the fruitages of Holy Spirit as brought out at Galatians 5:20 “On the other hand, the fruitage of the spirit is love, joy, peace, patience, kindness, goodness, faith,23 mildness, self-control. Against such things there is no law.24 Moreover, those who belong to Christ Jesus have nailed to the stake the flesh together with its passions and desires.

If our love for God and neighbor is stronger than our selfish desires, both momentary and deep seated, then we will inherit the Earth and God’s blessings after the unpeaceable are removed from it as promised by God Himself. When those resisting this path to peace are removed, everyone on Earth will be those cultivating peace and security. These will have the opportunity live eternally in peace on Earth. This is what Jesus was foretelling when under inspiration he stated ” The meek will inherit the Earth” at Matthew 5:3. Isaiah 48:18 foretells “If only you would pay attention to my commandments! Then your peace would become just like a river And your righteousness like the waves of the sea.19 Your offspring would be as many as the sand And your descendants as its grains. Their name would never be cut off or annihilated from before me.”

Psalm 37:10 “Just a little while longer, and the wicked will be no more; You will look at where they were, And they will not be there.11 But the meek will possess the earth, And they will find exquisite delight in the abundance of peace.” See Proverbs 2:21,22, Matthew 13:36-43, Philippians 4:7,9

All Bible verses are quoted from the NWT at jw.org