“Woe to you, scribes and Pharisees, hypocrites, because you are like whitewashed tombs that look beautiful on the outside but on the inside are full of dead men’s bones and all kinds of filth (akatharsias | ἀκαθαρσίας | gen sg fem).
Then I saw another angel flying directly overhead, with an eternal (aiōnion | αἰώνιον | acc sg neut) gospel to proclaim to those who live on the earth — to every nation, tribe, language, and people.
Likewise, Sodom and Gomorrah and the neighboring towns, which indulged in sexual immorality in the same way as the angels and pursued unnatural desire, are exhibited as an example by undergoing the punishment of eternal (aiōniou | αἰωνίου | gen sg neut) fire.
And we know that the Son of God has come and has given us discernment so that we may know him who is true; and we are in him who is true, in his Son Jesus Christ. This one is the true God and eternal (aiōnios | αἰώνιος | nom sg fem) life.
I am writing these things to you so that you may know that you have eternal (aiōnion | αἰώνιον | acc sg fem) life — you who believe in the name of the Son of God.
this life was revealed, and we have seen it and are bearing witness and proclaiming to you the eternal (aiōnion | αἰώνιον | acc sg fem) life that existed with the Father and was revealed to us —