I have always admired Paul's attitude concerning "opponents".
Philippians 1 New American Standard Bible (NASB)
To Live Is Christ
21 For to me, to live is Christ, and to die is gain.
22 [u]But if I am to live on in the flesh, this will mean fruitful labor for me; and I do not know which to choose.
23 But I am hard-pressed from both directions, having the desire to depart and be with Christ, for that is very much better;
24 yet to remain on in the flesh is more necessary for your sakes.
25 Convinced of this, I know that I will remain and continue with you all for your progress and joy in the faith,
26 so that your pride in Christ Jesus may be abundant because of me by my coming to you again.
27 Only conduct yourselves in a manner worthy of the gospel of Christ, so that whether I come and see you or remain absent, I will hear about you that you are standing firm in one spirit, with one mind striving together for the faith of the gospel;
28 and in no way alarmed by your opponents—which is a sign of destruction for them, but of salvation for you, and this too, from God.
29 For to you it has been granted for Christ’s sake, not only to believe in Him, but also to suffer on His behalf,
30 experiencing the same conflict which you saw in me, and now hear to be in me.
Those are beautiful words penned there by Paul!
A wonderful mindset to have in the very very temporal world and existence.
Jesus further condemns our accusers with this towards our enemies:
John 8:44-47
You are of your father the devil, and your will is to do your father’s desires. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he lies, he speaks out of his own character, for he is a liar and the father of lies. 45 But because I tell the truth, you do not believe me. 46 Which one of you convicts me of sin? If I tell the truth, why do you not believe me? 47 Whoever is of God hears the words of God. The reason why you do not hear them is that you are not of God.”