Too often people talk about the idea that all people should be accepted and loved and that hatred is bad. This is completely wrong when we take scripture into consideration.
Psalms 139:21 says, "Do not I hate them, O LORD, that hate thee? and am not I grieved with those that rise up against thee?"
What we can see from this specific scripture is that the guy is asking God, "do not I hate them..." like asking for validation that he's doing something right. Hatred is a good thing and if you have absolutely no hatred towards anyone, you are not certainly walking in the Spirit and you're not following the Bible.
Further on verse 22 the passage continues, "I hate them with perfect hatred: I count them mine enemies."
Now in this verse hatred described here is even deeper than just any normal hatred or negative emotion. With "perfect hatred" he is saying that the people that he hates deserve no love.
From this scripture we can see how serious it is when people are haters or enemies of God. They should not be treated with love, patience, longsuffering, none of that. Sometimes people literally deserve no love and this is proven by scripture. The more you think about this the more you would realize that you should start hating people more and not be like a Pontius Pilate who want's to be on everyone's side. Even from a human perspective, you could conclude that hatred in and of itself should not be bad if God gave people emotions, hatred being one of them. God would not create something bad that shouldn't exist.
So what people would fall into this category of people that deserve no love? The enemies of God. The LGBTQ people for certain. The false prophets. The atheists, at least most of them. The list could continue.
I'm pretty confident that the poster here isn't going to listen to anything I have to say. So I'll instead address everyone else reading this thread.
I'd like to share what is considered an important principle of biblical hermeneutics. The principle known as Description vs Prescription.
This is, broadly speaking, understood to be a pretty common sense approach to reading the Bible. After all, we read--for example--of Pharaoh giving the order to have all the male children of the Hebrew slaves in Egypt put to death. This is the event that, in the story of the Exodus, leads to Moses being placed in a basket and into the river to spare his life--leading to him being discovered by the Egyptian princess and raised in the court.
Without a descriptive vs prescriptive principle, then we could conclude that because the text speaks of the murder of babies, that the Bible is giving a prescriptive statement: go and kill babies. That, of course, is a wildly stupid way to read and understand what is being said in the text. The text, very clearly, presents Pharoah as the villain of the story and the murder of the Hebrew children as a very bad thing done by a tyrant who is keeping the Hebrew people enslaved and oppressed. Moses' escape from this murder, his survival, ultimately leads to a place in the story where he stumbles upon a bush that burns without being consumed, where he has an encounter with God and becomes the redeemer of the Hebrew slaves. Which, if one is paying attention to the text and the story--is a pretty big deal.
Now in the example I gave above, the principle is pretty obvious--it doesn't take a biblical scholar to recognize that one isn't supposed to imitate the villain of a story. For the same reason it doesn't take a degree in media literacy to recognize that Emperor Palpatine is the bad guy in the Star Wars movies.
Sometimes it can be more difficult. So, here for example, in Psalm 139 the Psalmist speaks of God's faithfulness and love for the Psalmist, about how God knows the Psalmist, because God created him, and the Psalmist cannot escape God because God is everywhere--even if the Psalmist were to try to escape, in death, to the deepest depths of death (She'ol, sometimes translated as "hell" in English Bibles), God is still present there. The Psalmist, in two lines, expresses his devotion to God by saying that he hates those who hate God.
How ought one respond to Psalm 139:21-22? Well first we should understand, as a matter of chief importance, that these are the words of the Psalmist: These are the sincere words of someone writing a song/poem (a psalm). Is the reader to understand these words as prescriptive? That since the Psalmist says he hates certain people, then those who read these words are to imitate this and also engage in hate?
Let's notice here that there is no explicit prescription given--there is nothing in the text to direct the reader to also hate anyone. So there exists no explicit prescription. It is purely descriptive. We know what the Psalmist feels, but we know nothing about how we ought to feel.
In order to know how we ought to feel, or how we ought to regard other people, how to treat them (etc) it may instead be far more beneficial (if we consider the Bible authoritative in some way) to see those texts which do give explicit prescription.
For the Christian, the Chief Commandment is given by Christ who quotes Deuteronomy and Leviticus saying "Love the Lord your God... and love your neighbor as yourself" and upon these two commandments hangs the Law and the Prophets. After saying this, someone asks Jesus, "Who is my neighbor?" and Jesus responds by telling the Parable of the Good Samaritan. In the story a man is on the road and attacked, beaten almost to the point of death. Two "righteous" men end up seeing the man in such a terrible condition and do nothing. Then a Samaritan, whom the initial hearers of the story would regard as an "other", a social outcast, who shows compassion and acts righteous--taking the beaten man to an inn and pays for his stay and recovery. The Samaritan is who the listener is supposed to imitate, so Jesus says, "Go and do likewise".
Who is my neighbor? Well it's whoever I encounter in life's journey.
Does it matter if the person I meet is like me in anyway? No. If you see someone who needs help, you help them. End of debate.
For the Christian, there are some top priority statements about how we are to conduct ourselves as disciples of Jesus. In the Gospel of Matthew this is found in what is called the Sermon on the Mount; in Luke's Gospel the parallel account is called the Sermon on he Plain. In this Sermon Jesus teaches, explicitly and with perfect clarity, that to do justice means not only loving those who love you, but loving the ones who hate you--that is, "love your enemy". Jesus asks rhetorically, "What benefit is it if you only love those who also love you? Don't even sinners do this?" That is, everyone loves people who love them, this isn't hard to do, it's very easy to love those who already love you. But what is hard is to love those who hate you, to be kind to those who despise you, to bless when you are cursed, to be merciful when you are not shown mercy. This is credit to you when you do it because this is acting justly even in the face of injustice. This is how one imitates God, "Be merciful, even as God is merciful, for He is kind to the ungrateful and the wicked" (Matthew's version says, "Be perfect, even as your Father in heaven is perfect")
Jesus in speaking of God's mercy, echoes the Prophet Ezekiel, "Do I rejoice in the death of the wicked? Says God, Do I not rather he repent and live?" And there is also the Prophet Micah who said, "He has told you, O mortal, what is good; and what does YHWH demand of you? But to do justice, to love kindness, and to walk humbly with your God."
Jesus is not departing from the moral framework of the Law and the Prophets, but emphasizing it: God is a God who forgives, who shows mercy, who acts with kindness even toward the worst of the worst. In the same way, those who claim to love God ought to do as God does: be kind, be just, love and forgive and show mercy toward all--even the worst of the worst.
St. Paul will, in his Epistle to the Romans, call back to Jesus' words here, when giving instruction for how Christians ought to conduct themselves. To seek to outdo one another in showing honor--doing what is right in the sight of all. In refusing to repay evil with evil, but instead to respond to evil with good. So one is to love the one who hates you, if your enemy is hungry, feed him; if your enemy is thirsty, give him drink. Because Judgment belongs to God--not to you and me. When someone hates us and we are kind, it will be as though coals are heaped upon his head--knowing the shame of his hate when he receives love, so that on the Last Day when all must stand and be judged, the one who acted with evil will not be taken by surprise. But also, in loving rather than hating the one who hates us, it can be a profound moment of redemptive change in the heart of one's enemy--so that he is no longer enemy, but a potential friend and brother.
We have some pretty clear instruction about how we ought to live, how we ought to be, how to conduct ourselves toward others (including those who resent us, hate us, and even wish to harm us). And the one thing that is not permissible in all of this, is hate.
So this leads to an important question: When we are reading these ancient and sacred texts, what is our guiding principle? Do we take descriptive statements where we read of a sinful person having sinful thoughts and take that as how we ought to live? Or do we take the clear instructive and prescriptive teachings, such as loving our enemy, especially when it is spoken by the One Christians confess to be the Incarnate Deity Himself, to be the regulative principle of moral, ethical, and righteous conduct?
In short, it requires a mighty dose of biblical illiteracy to read Psalm 139:21-22 and conclude we should hate people. So much so that one must wonder if this is, in fact, a very clear example of mining the Bible to find quotable justifications for one's own dark and evil impulses.