I believe the Popes are children of the devil just as the Pharisees were...
Deuteronomy 13:13
the children of Belial,
Judges19:22
certain sons of Belial,
1 Samuel 2:12; 10:27; 30:22
Now the sons of Eli were sons of Belial;
But the children of Belial said,
Then answered all the wicked men and men of Belial,
2 Samuel 20:1
And there happened to be there a man of Belial,
1 Kings 21:10
sons of Belial,
2 Chronicles 13:7
the children of Belial,
John 8:44
Ye are of your father the devil,
Acts 3:10
thou child of the devil,
1 John 3:12
Not as Cain, who was of that wicked one,
Some of the religious leaders of Jesus’ time had committed the unforgivable sin and taken the devil as their god. Jesus identified these people as children of the devil and knowing that fact helps explain so much about them. It explains why they murdered innocent people, why they lied and bribed people, and why they could not rejoice even when something wonderful had occurred like the healing of a man who was born blind. It also explains why they perverted the Word of God and made it hard to obey it. People can be horrible sinners without taking the devil as their god and committing the unforgivable sin. Nevertheless, the Bible has a lot to say about people who have become children of the devil so we know how they are and that they always pervert the ways of God.
“people will be forgiven for every sin and defaming word, but the defaming of the Spirit will not be forgiven.” These words of Jesus Christ are very direct: “every” sin and defaming word can be forgiven except one, a sin he referred to as “defaming” or to “speak against” the Holy Spirit. The definition of “defaming” includes slander, speaking against God, or verbal abuse, and it's clear from comparing the above two verses that Christ is defining defaming as “speaking against” something. Jesus said there is one form of defaming against God that will never be forgiven, and he was referring to a specific defaming, not just speaking against God in general. Many people have at some time been angry at God due to the horrific circumstances of this fallen world, and many have spoken very harshly about God and/or to Him. In fact, it is safe to say that most people have even cursed at God, and yet when they ask for forgiveness, He forgives them. The same is true of other kinds of sin. Many people sin horribly against God but are later forgiven. But there is a defaming that will not be forgiven.
What we learn from the scope of Scripture is that the defaming that cannot be forgiven is a person saying, and truly meaning in the depths of their heart, that satan is the true god. The Bible reveals that the devil can have “children” that is, people who have a unique relationship with him that makes them different from other sinners whose sins can be forgiven. People who are children of the devil have sinned in such a way that they are no longer redeemable, that is, they cannot be forgiven, and it's not possible for them to be saved. The world is full of sinful people, and some of those sinners do very horrible things. Nevertheless, in the spiritual world, there is a difference between people who sin and can be forgiven and people who cannot be forgiven because in their heart of hearts they have taken the devil as their god and have become his “children” and are true enemies of righteousness.
Some people so strongly lust for what they want that in their heart they make satan, or one of his many fronts or idols, their “true” god and provider, and thus become his “children.” These self-centered people turn to satan in order to quickly gain their desires, and in so doing turn away from the true God. The Bible does not describe exactly what a person does to become a child of the devil, but it gives us some important information. Because Christ categorized it as a form of blasphemy, we know it is something that is said, either audibly or by speaking to oneself, but it cannot simply be saying, “I hate God” or “I love the devil,” or something such as that. It has to be fully believed in the heart as well as in the mind. From what we see in Scripture, it occurs when someone completely turns away from God, and confesses and believes in their heart that satan, or one of his many forms—such as money, power, fame, or love—is the true “god” by being their sustainer, provider, or the “lord” of their life.
In the context of the unforgivable sin, it is important that Christians understand “God” in its more basic meaning of sustainer, provider, something that is worshiped or idealized, and something considered of supreme value. To blaspheme God does not mean one has to believe that the devil is actually the Christian God and Father. Nor does it mean a person has to know that the devil is a fallen angel who opposes the true creator God. To commit the unforgivable sin a person only has to truly take the devil or one of his fronts as his own true god and provider. For example, it is unlikely that the Pharisees who were children of the devil had taken “the devil” per se as their god, but rather that they so highly valued their prestige, power, and position that they had in their hearts and in doing so made that their god as they turned to the devil via one of his fronts.
The unforgivable sin can be committed by believing and saying in your heart that satan or one of the forms he hides behind and supports is the true sustainer, provider, or object of supreme value in one’s life. No doubt that was what satan was asking Jesus to do when he offered him all the power of the world if Jesus would worship him. The devil was not asking Jesus to think that God did not exist or that satan somehow was, in fact, God, but rather that satan would be Jesus’ true sustainer and provider, the true god of his life. The devil wanted Jesus to become a child of his, which would have been the ultimate coup, but to do so Jesus would have had to “worship” the devil, not just in form, but in the depths of his heart.
In the Bible, the children of the devil are enemies of God and they reflect the devil’s nature. They are envious, murderers, liars, and show no genuine godly concern for humankind. Throughout history, many people have sensed that, in contrast to the majority of sinners who are simply caught up in their sin, some people are truly evil to the core and are somehow connected to evil spiritual forces, and many of those people are indeed “children” of the devil, just as Christ said. They lead people away from God and are into idolatry or false systems of worship. They rape, murder, and instigate wars. They defame God and the things of God and they lie, resent godly leadership, work to weaken it, and they sow division. They do the works of the devil and try to pervert the ways of God, and they work to make it hard for people to obey God. Children of the devil will never repent, so believers should follow Christ’s guidance and leave them alone. In contrast, if a person wants to repent and follow Jesus, they are not a child of the devil.
Note: devil written here in lower case on purpose.