Romans 12:19
Beloved, never avenge yourselves, but leave room for the wrath of God, for it is written, "Vengeance is mine, I will repay, says the Lord."
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Jesus made it perfectly clear that believers should expect the world to hate and mistreat us, as He said, “If the world hates you, you know that it has hated Me before it hated you. If you were of the world, the world would love its own; but because you are not of the world, but I chose you out of the world, therefore the world hates you.” {Jn.15:18-19}
 
So, while we are told not to take our own revenge, we are definitely instructed to take action. In everything we are to bring the presence of God, the love of God and the Word of God to the world. In the Sermon on the Mount Jesus commands us to love our enemies and pray for ('for' not against!) those who persecute and mistreat us. That He says is what indeed gives the evidence that we are sons of our Father in Heaven. {Mat.5:43-45}
 
The apostle Paul, while he was yet still Saul of Tarsus, hated and persecuted believers wherever and however he could. That was his “religious service” and that was before his encounter with the risen Christ on the road to Damascus. He would then come to say quoting from the Book of Proverbs, 'If your enemy is hungry, feed him, if your enemy is thirsty give him a drink' {Prov.25:21} We are to let the Lord deal with the person and the situation as we bring His word and His love!

Even then we saints of God still have the opportunity to participate in the work of God. Sin will always bring the wrath of God—and the wages of sin is death. {Rom.6:23} Like Jesus going to the cross who prayed asking the Father to forgive them, all of us sinners indeed. {Lk.23:34} He was willingly taking the penalty of our sin upon Himself.
 
As an old hymn states, 'There is victory in Jesus' and that is always true. It may not always happen the way that we would want, but His will should certainly always be our goal!

If we are faithful to obey the Lord:
 
"The LORD will cause your enemies who rise up against you to be defeated before you; they shall come out against you one way and shall flee before you seven ways.
    The LORD will command the blessing upon you in your barns and in all that you put your hand to, and He will bless you in the land which the LORD your God gives you.
     The LORD will establish you as a holy people to Himself, as He swore to you, if you will keep the commandments of the LORD your God, and walk in His ways. So all the peoples of the earth shall see that you are called by the name of the LORD; and they shall be afraid of you.” (Deuteronomy 28:7-10)
 
THERE IS VICTORY IN JESUS