The Apostle Paul tells us that we as saved Gentiles, members of the body of Christ shouldn’t behave like other (unbelieving) Gentiles :
Ephesians 4:17 ……. as other Gentiles walk in the vanity of their mind, having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart: who being past feeling have given themselves over unto lasciviousness, to work all uncleanness with greediness.
Ephesians 6:1-2 children, obey your parents in the Lord: for this is right. Honour thy father and mother (which is the first commandment with promise;) that it may be well with thee AND THOU MAYEST LIVE LONG ON THE EARTH.
Ephesians 6:8 Knowing that whatsoever good thing any man doeth, the same shall he receive of the Lord, whether he be bond or free.
So when you take revenge or spite someone, you are in fact doing it to yourself because what you hand out, you will get back in return.
1 Timothy 2:6-7
Philippians 3:18-19 (for many walk, of whom I have told you often, and now tell you even weeping, that they are enemies of the cross of Christ: whose end is DESTRUCTION, whose God is their belly and whose glory is in their shame, who mind earthly things.)
If you are a novice at preaching, and if you do not get on well with unbelievers you will fall into the condemnation of the devil, as well as into reproach and the snare of the devil according to 1 Timothy 2:6-7. One only has to look around to find a lot of evidence in this regard pertaining to Mid-Acts Preachers and Teachers.
Some will tell you in their ignorance that there is no condemnation for these preachers because they are in Christ. But what they sow, they will reap. God is not mocked, and you cannot do and say as you please – there are consequences.
1 Timothy 1:4-8 For bodily exercise profiteth little: but godliness is profitable unto all things, having promise of life that now is and of that which is to come.
….. having promise of life that NOW is.
1 Timothy 5:24-25.