Christ's followers are taught to become peacemakers even in this present age (Matthew 5:9 Matthew 5:9Blessed are the peacemakers: for they shall be called the children of God.
American King James Version×), and will teach others in the world to come.

Paul described some of the elements of this way of peace in his letter to the Romans: "Live in harmony with one another. Do not be proud, but be willing to associate with people of low position. Do not be conceited. Do not repay anyone evil for evil. Be careful to do what is right in the eyes of everybody.

"If it is possible, as far as it depends on you, live at peace with everyone. Do not take revenge, my friends, but leave room for God's wrath, for it is written: 'It is mine to avenge; I will repay,' says the Lord.

"On the contrary: 'If your enemy is hungry, feed him; if he is thirsty, give him something to drink. In doing this, you will heap burning coals on his head.' Do not be overcome by evil, but overcome evil with good" (Romans 12:16-21 Romans 12:16-21 [16] Be of the same mind one toward another. Mind not high things, but condescend to men of low estate. Be not wise in your own conceits. [17] Recompense to no man evil for evil. Provide things honest in the sight of all men. [18] If it be possible, as much as lies in you, live peaceably with all men. [19] Dearly beloved, avenge not yourselves, but rather give place to wrath: for it is written, Vengeance is mine; I will repay, said the Lord. [20] Therefore if your enemy hunger, feed him; if he thirst, give him drink: for in so doing you shall heap coals of fire on his head. [21] Be not overcome of evil, but overcome evil with good.
American King James Version×, New International Version).

Many other biblical passages detail the attitude and approach of the peacemaker (for example, open your Bible and take time to read Romans 8:5-8 Romans 8:5-8 [5] For they that are after the flesh do mind the things of the flesh; but they that are after the Spirit the things of the Spirit. [6] For to be carnally minded is death; but to be spiritually minded is life and peace. [7] Because the carnal mind is enmity against God: for it is not subject to the law of God, neither indeed can be. [8] So then they that are in the flesh cannot please God.
American King James Version×; Romans 14:17-19 Romans 14:17-19 [17] For the kingdom of God is not meat and drink; but righteousness, and peace, and joy in the Holy Ghost. [18] For he that in these things serves Christ is acceptable to God, and approved of men. [19] Let us therefore follow after the things which make for peace, and things with which one may edify another.
American King James Version×; 1 Corinthians 13:4-7 1 Corinthians 13:4-7 [4] Charity suffers long, and is kind; charity envies not; charity braggs not itself, is not puffed up, [5] Does not behave itself unseemly, seeks not her own, is not easily provoked, thinks no evil; [6] Rejoices not in iniquity, but rejoices in the truth; [7] Bears all things, believes all things, hopes all things, endures all things.
American King James Version×; 1 Corinthians 14:33 1 Corinthians 14:33For God is not the author of confusion, but of peace, as in all churches of the saints.
American King James Version×; Philippians 2:3-5 Philippians 2:3-5 [3] Let nothing be done through strife or vainglory; but in lowliness of mind let each esteem other better than themselves. [4] Look not every man on his own things, but every man also on the things of others. [5] Let this mind be in you, which was also in Christ Jesus:
American King James Version×; Philippians 4:6-9 Philippians 4:6-9 [6] Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known to God. [7] And the peace of God, which passes all understanding, shall keep your hearts and minds through Christ Jesus. [8] Finally, brothers, whatever things are true, whatever things are honest, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report; if there be any virtue, and if there be any praise, think on these things. [9] Those things, which you have both learned, and received, and heard, and seen in me, do: and the God of peace shall be with you.
American King James Version×; and James 3:17-18 James 3:17-18 [17] But the wisdom that is from above is first pure, then peaceable, gentle, and easy to be entreated, full of mercy and good fruits, without partiality, and without hypocrisy. [18] And the fruit of righteousness is sown in peace of them that make peace.
American King James Version×).

The way of peace, coupled with the justice and mercy of God's government, will provide effective conflict resolution on the personal and national level. Ultimately, every conflict can have a win-win solution that will benefit all parties for eternity.

Rebuilding and renewal

After the most devastating war in human history, there will be an incredible amount of cleanup and rebuilding to do. But this time people will be able to rebuild knowing that it won't all be destroyed again in a few years by another war.

This time the rebuilding will be done in a sensible and sustainable way. Cities will be clean and safe. Villages and farmlands will be productive and beautiful. Picture these scenes from the words of the prophets:

"I will bring back the captives of My people Israel; they shall build the waste cities and inhabit them; they shall plant vineyards and drink wine from them; they shall also make gardens and eat fruit from them" (Amos 9:14 Amos 9:14And I will bring again the captivity of my people of Israel, and they shall build the waste cities, and inhabit them; and they shall plant vineyards, and drink the wine thereof; they shall also make gardens, and eat the fruit of them.
American King James Version×).

"So they will say, 'This land that was desolate has become like the garden of Eden; and the wasted, desolate, and ruined cities are now fortified and inhabited" (Ezekiel 36:35 Ezekiel 36:35And they shall say, This land that was desolate is become like the garden of Eden; and the waste and desolate and ruined cities are become fenced, and are inhabited.
American King James Version×).

Even Jerusalem, the most fought over piece of real estate in history, will finally live up to the meaning of its name as a city of peace and safety:

"Old men and old women shall again sit in the streets of Jerusalem, each one with his staff in his hand because of great age. The streets of the city shall be full of boys and girls playing in its streets" (Zechariah 8:4-5 Zechariah 8:4-5 [4] Thus said the LORD of hosts; There shall yet old men and old women dwell in the streets of Jerusalem, and every man with his staff in his hand for very age. [5] And the streets of the city shall be full of boys and girls playing in the streets thereof.
American King James Version×).

A world without war will be incredibly better than today's world. But a world with true peace—resulting from following God's way of peace—will be fantastic almost beyond human imagination!

God promises a world of peace and prosperity will come (Micah 4:1-4 Micah 4:1-4 [1] But in the last days it shall come to pass, that the mountain of the house of the LORD shall be established in the top of the mountains, and it shall be exalted above the hills; and people shall flow to it. [2] And many nations shall come, and say, Come, and let us go up to the mountain of the LORD, and to the house of the God of Jacob; and he will teach us of his ways, and we will walk in his paths: for the law shall go forth of Zion, and the word of the LORD from Jerusalem. [3] And he shall judge among many people, and rebuke strong nations afar off; and they shall beat their swords into plowshares, and their spears into pruning hooks: nation shall not lift up a sword against nation, neither shall they learn war any more. [4] But they shall sit every man under his vine and under his fig tree; and none shall make them afraid: for the mouth of the LORD of hosts has spoken it.
American King James Version×)! It's what everyone has always wanted, but mankind has never been able to achieve it. Why?