How will violence be stopped?

1) God destroyed the earth in the past due to violence.
The earth also was corrupt before God, and the earth was filled with violence. So God looked upon the earth, and indeed it was corrupt; for all flesh had corrupted their way on the earth. And God said to Noah, “The end of all flesh has come before Me, for the earth is filled with violence through them; and behold, I will destroy them with the earth.” Genesis 6:11-13.

2) God hates wicked people who love violence.
The Lord tests the righteous, but the wicked and the one who loves violence His soul hates. Upon the wicked He will rain coals; Fire and brimstone and a burning wind shall be the portion of their cup. Psalm 11:5-6.

3) Wicked people practice evil and violence.
Do not enter the path of the wicked, and do not walk in the way of evil. Avoid it, do not travel on it; Turn away from it and pass on. For they do not sleep unless they have done evil; And their sleep is taken away unless they make someone fall. For they eat the bread of wickedness, and drink the wine of violence. Proverbs 4:14-17.

4) Wicked people are fools who will be destroyed.
The mouth of the righteous is a well of life, but violence covers the mouth of the wicked. Hatred stirs up strife, but love covers all sins. Wisdom is found on the lips of him who has understanding, but a rod is for the back of him who is devoid of understanding. Wise people store up knowledge, but the mouth of the foolish is near destruction. Proverbs 10:11-14.

5) Jesus Christ died for all sin but lives eternally.
And they made His grave with the wicked—But with the rich at His death, because He had done no violence, nor was any deceit in His mouth. Yet it pleased the Lord to bruise Him; He has put Him to grief. When You make His soul an offering for sin, He shall see His seed, He shall prolong His days, and the pleasure of the Lord shall prosper in His hand. Psalm 53:9-10.

6) Jesus Christ will eliminate violence when He returns.
Violence shall no longer be heard in your land, neither wasting nor destruction within your borders; But you shall call your walls Salvation, and your gates Praise. “The sun shall no longer be your light by day, nor for brightness shall the moon give light to you; But the Lord will be to you an everlasting light, and your God your glory. Your sun shall no longer go down, nor shall your moon withdraw itself; For the Lord will be your everlasting light, and the days of your mourning shall be ended. Isaiah 60:18-20.

7) God promises eternal life to those who have faith in Jesus Christ.
And what more shall I say? For the time would fail me to tell of Gideon and Barak and Samson and Jephthah, also of David and Samuel and the prophets: who through faith subdued kingdoms, worked righteousness, obtained promises, stopped the mouths of lions, quenched the violence of fire, escaped the edge of the sword, out of weakness were made strong, became valiant in battle, turned to flight the armies of the aliens. Women received their dead raised to life again. Others were tortured, not accepting deliverance, that they might obtain a better resurrection. Still others had trial of mockings and scourgings, yes, and of chains and imprisonment. They were stoned, they were sawn in two, were tempted, were slain with the sword. They wandered about in sheepskins and goatskins, being destitute, afflicted, tormented— of whom the world was not worthy. They wandered in deserts and mountains, in dens and caves of the earth. And all these, having obtained a good testimony through faith, did not receive the promise, God having provided something better for us, that they should not be made perfect apart from us. Therefore we also, since we are surrounded by so great a cloud of witnesses, let us lay aside every weight, and the sin which so easily ensnares us, and let us run with endurance the race that is set before us, looking unto Jesus, the author and finisher of our faith, who for the joy that was set before Him endured the cross, despising the shame, and has sat down at the right hand of the throne of God. Hebrews 11:32-12:2