We know that when the apostles used the word Tartarus he wasn't teaching that those who worshipped false Gods who believed in a place like Tartarus, that such a place actually literally existed.
In the Christian Greek Scriptures, its used as a prisonlike abased condition into which the disobedient angels of Noah’s day were cast. At
2 Peter 2:4, the use of the verb tartaroo (to “cast into Tartarus”) does not signify that “the angels who sinned” were cast into the pagan mythological Tartarus (that is, an underground prison and place of darkness for the lesser gods). Rather, it indicates that they were abased by God from their heavenly place and privileges and were delivered over to a condition of deepest mental darkness respecting God’s bright purposes. Darkness also marks their own eventuality, which the Scriptures show is everlasting destruction along with their ruler, Satan the Devil. Therefore, Tartarus denotes the lowest condition of abasement for those rebellious angels. It is not the same as “the abyss” spoken of at
Revelation 20:1-3.
Tartarus, the infernal regions of ancient Greek mythology. The name was originally used for the deepest region of the world, the lower of the two parts of the underworld, where the gods locked up their enemies. It gradually came to mean the entire underworld. As such it was the opposite of Elysium, where happy souls lived after death. In some accounts Tartarus was one of the personified elements of the world, along with Gaea (Earth) and others. According to those accounts, Tartarus and Gaea produced the monster Typhon
Tartarus, the infernal regions of ancient Greek mythology. The name was originally used for the deepest region of the world, the lower of the two parts of the underworld, where the gods locked up their enemies. It gradually came to mean the entire underworld. As such it was the opposite of...
www.britannica.com
In Greek mythology, Tartarus was the lowest point of the universe, below the underworld but separate from it. Tartarus is best known from Hesiod's Theogony as one of the first beings to come into existence...
www.worldhistory.org
Tartarus was a primordial deity and the embodiment of the deepest, darkest part of the Underworld. With Gaia, the personification of the earth, he fathered the terrible monster Typhoeus.
mythopedia.com
In ancient Greek mythology, Tartarus was a horrible pit of torment in the afterlife. It was lower than even Hades, the place of the dead. According to the Greeks, Tartarus was populated by ferocious monsters and the worst of criminals.
The Greek word Tartarus appears only once in the entire New Testament. Second Peter 2:4 says, “God did not spare angels when they sinned, but sent them to [Tartarus], putting them in chains of darkness to be held for judgment.” Most English versions translate tartarus as “hell” or “lowest hell.” The word Tartarus can be defined as “the deepest abyss of Hades.”
Another place in Scripture that mentions sinning angels is Genesis 6:1–4 where “the sons of God” took control of human women and their progeny. According to Jude 1:6, some angels “abandoned their proper dwelling” in the heavens. For this crime, God cast them into Tartarus where they are held “in pits of gloom” (AMP) for a later judgment. It seems that Tartarus was what the demons feared in Luke 8:31.
Peter’s mention of Tartarus is in the context of condemning false teachers. Those who secretly introduce heresy into the church will suffer a fate similar to that of the angels who sinned—they will end up in Tartarus. The Lord does not tolerate those who lead His children astray (Matthew 18:6).
What is Tartarus? Does the Bible mention Tartarus? Is Tartarus the same place as hell / hades?
www.gotquestions.org
NOT the same context, this chapter speaks of humans, the demons.
1 Peter 3
J.B. Phillips New Testament
A word to married Christians
3 1-6 In the same spirit you married women should adapt yourselves to your husbands, so that even if they do not obey the Word of God they may be won to God without any word being spoken, simply by seeing the pure and reverent behaviour of you, their wives. Your beauty should not be dependent on an elaborate coiffure, or on the wearing of jewellery or fine clothes, but on the inner personality—the unfading loveliness of a calm and gentle spirit, a thing very precious in the eyes of God. This was the secret of the beauty of the holy women of ancient times who trusted in God and were submissive to their husbands. Sara, you will remember, obeyed Abraham and called him her lord. And you have become, as it were, her true descendants today as long as you too live good lives and do not give way to hysterical fears.
7 Similarly, you husbands should try to understand the wives you live with, honouring them as physically weaker yet equally heirs with you of the grace of eternal life. If you don’t do this, you will find it impossible to pray properly.
Be good to each other—and to all men
8-12 To sum up, you should all be of one mind living like brothers with true love and sympathy for each other, generous and courteous at all times. Never pay back a bad turn with a bad turn or an insult with another insult, but on the contrary pay back with good. For this is your calling—to do good and one day to inherit all the goodness of God. For: ‘He who would love life and see good days, let him refrain his tongue from evil, and his lips from speaking guile: let him turn away from evil and do good; let him seek peace and pursue it. For the eyes of the Lord are on the righteous, and his ears are open to their prayers; but the face of the Lord is against those who do evil’.
Do good, even if you suffer for it
13-16 After all, who in the ordinary way is likely to injure you for being enthusiastic for good? And if it should happen that you suffer “for righteousness’ sake”, that is a privilege. You need neither fear their threats nor worry about them; simply concentrate on being completely devoted to Christ in your hearts. Be ready at any time to give a quiet and reverent answer to any man who wants a reason for the hope that you have within you. Make sure that your conscience is perfectly clear, so that if men should speak slanderously of you as rogues they may come to feel ashamed of themselves for libelling your good Christian behaviour.
17-22 If it is the will of God that you should suffer it is really better to suffer unjustly than because you have deserved it. Remember that Christ the just suffered for us the unjust, to bring us to God.
That meant the death of his body, but he came to life again in the spirit. It was in the spirit that he went and preached to the imprisoned souls of those who had been disobedient in the days of Noah—the days of God’s great patience during the period of the building of the ark, in which eventually only eight souls were saved in the flood. And I cannot help pointing out what a perfect illustration this is of the way you have been admitted to the safety of the Christian “ark” by baptism, which means, of course, far more than the mere washing of a dirty body: it means the ability to face God with a clear conscience. For there is in every true baptism the virtue of Christ’s rising from the dead. And he has now entered Heaven and is at God’s right hand, with all angels, authorities and powers subservient to him.
