The devil never gives up because of his hate for God’s children. Adam, for instance, was “the son of God,” Luke 3:38, so what was evil’s reaction to that? “A child of God, eh? We’ll see about that,” and went about getting Adam to NOT act like God’s son at all. And it worked, because how could Adam be a true son of God when he neither obeyed God or trusted him?
Having nailed the first Adam, the devil was at it again to nail the second Adam – by trying to get Jesus not acting like God’s Son too. He tried three ridiculous, but potentially ruinous temptations, two of them prefaced with the snarky, “If you are the Son of God,” Matthew 4:3,6.
The devil’s objective was to prove Jesus wasn’t the Son of God. But why was that so important? Because, John 1:12, “to all who believed him (Jesus) and accepted him (as the Son of God), he (God) gave the right to become his children.” At stake here, therefore, was humans becoming God’s children for believing in Jesus being the Son of God.
But why would the devil not want that happening? Because, John 3:36, “Whoever believes in the Son has eternal life.” Belief in Jesus being the Son of God means that humans will be indestructible. So the devil has to come up with something to stop it.
But how? Well, there was one way of stopping it, because “anyone born of God does not continue to sin,” 1 John 5:18. Bingo, just get Christians sinning, then, because, 1 John 3:10, “Anyone who doesn’t do what’s right isn’t a child of God.” Couldn’t be any clearer, could it?
So, how to get Christians sinning? There’s a clue for that too, in 1 John 3:7, when John writes, “Dear children, don’t let anyone lead you astray.” Ah, so it’s not getting Christians to commit a blatant and obvious sin, it’s getting us to wander off the path without realizing it. And the devil has all sorts of ways of making that happen, like pride, distraction, delusion, etc., so how can we paltry humans stand up against his cunning?
Fortunately, John asks and answers that question for us in 1 John 5:5. “Who is it that overcomes the world (and the devil’s cunning use of it against us)?” Only he who believes that Jesus is the Son of God,” because, verse 11, “God has given us eternal life, and this life is in his Son.” And because we believe that, “This is the assurance we have in approaching God: that if we ask anything according to his will, he hears us,” verse 14.
So when the devil’s at it again with his ridiculous, but potentially ruinous temptations to lead us astray, we’ve got a Father who very much appreciates our belief in his Son, which he will prove by keeping us on track when we ask him.
Buck To Basics 
I cannot find a single Bible verse where is actually says that the devil hates God’s children. On the other hand, the Bible is filled with verses about people hating other people.
The devil was created for a purpose, as an instrument for God’s work as stated in Isaiah 54:16 –
“Behold, I have created the blacksmith Who blows the coals in the fire, who BRINGS FORTH AN INSTRUMENT [forges a weapon] for his work; and I have CREATED the SPOILER [destroyer, ravager, waster] to DESTROY [devastate, ravage, bring destruction, inflict ruin, wreak havoc].” Satan is that SPOILER.
The devil was just doing the job that he was created to do—to buffet God’s children—and he cannot do anything other than what God allows, as recorded in Job chapters 1 & 2. He is the opposing force that is used to build that spiritual muscle that is needed to overcome all obstacles. Without that opposing force, we would become spiritual weaklings. It’s like lifting weights—the heavier the weight, the more force must be used to lift those weights, which in turn builds physical strength by measure. Without the physical force of any type of exercise, we would become physically weak and flabby. So force is needed to build strength.
Furthermore, the Bible clearly states who created evil in the first place –
“I form the light, and CREATE DARKNESS: I make peace, and CREATE EVIL: I the LORD do ALL these things.” (Isaiah 45:7)
Jesus described the nature of the devil in John 8:44 –
“You are of YOUR FATHER THE DEVIL, and the desires of your father you want to do. HE WAS A MURDERER [not an angel] FROM THE BEGINNING, and does not stand in the truth, because there is no truth in him. When he speaks a lie, he speaks from his own resources, for HE IS A LIAR AND THE FATHER OF IT.”
A couple of really good commentaries on this subject can be found in the links below:
https://www.kingdombiblestudies.org/serpent/Serpent.htm
https://bible-truths.com/lake2.html
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