Nahum 1
2 The Lord is a jealous and avenging God;
the Lord takes vengeance and is filled with wrath.
The Lord takes vengeance on his foes
and vents his wrath against his enemies.
3 The Lord is slow to anger but great in power;
the Lord will not leave the guilty unpunished.
His way is in the whirlwind and the storm,
and clouds are the dust of his feet.
Hebrews 10:
30 For we know him who said, “It is mine to avenge; I will repay,”[Deut. 32:35] and again, “The Lord will judge his people.”[Deut. 32:36; Psalm 135:14] 31 It is a dreadful thing to fall into the hands of the living God.
Romans 12 :
17 Do not repay anyone evil for evil. Be careful to do what is right in the eyes of everyone. 18 If it is possible, as far as it depends on you, live at peace with everyone. 19 Do not take revenge, my dear friends, but leave room for God’s wrath, for it is written: “It is mine to avenge; I will repay,”[Deut. 32:35] says the Lord. 20 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.”[Prov. 25:21,22]
21 Do not be overcome by evil, but overcome evil with good.
Matthew 5 :
Love for Enemies
43 “You have heard that it was said, ‘Love your neighbor[Lev. 19:18] and hate your enemy.’ 44 But I tell you, love your enemies and pray for those who persecute you, 45 that you may be children of your Father in heaven. He causes his sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous. 46 If you love those who love you, what reward will you get? Are not even the tax collectors doing that? 47 And if you greet only your own people, what are you doing more than others? Do not even pagans do that? 48 Be perfect, therefore, as your heavenly Father is perfect.
Proverbs 9:10
The fear of the Lord is the beginning of wisdom, and knowledge of the Holy One is understanding.
1 Corinthians 13:2
If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but do not have love, I am nothing.
2 Corinthians 9:
6 Remember this: Whoever sows sparingly will also reap sparingly, and whoever sows generously will also reap generously. 7 Each of you should give what you have decided in your heart to give, not reluctantly or under compulsion, for God loves a cheerful giver. 8 And God is able to bless you abundantly, so that in all things at all times, having all that you need, you will abound in every good work.
What any do for the Lord, out of fear, out anything but love is worthless. You can get many to do a lot of things out of fear, but it doesn't come from the heart. Vengeance is for Jesus, we are to love our enemy