Tafsir of Al-Bayyinah 98:6

Mentioning the Worse and Best of Creation and Their Recompense Allah says,

إن الذين كفروا من أهل الكتاب والمشركين

Allah informs of what will happen to the wicked disbelievers among the People of the Scripture and the idolators who oppose the Allah's divinely revealed Books and the Prophets whom He sent. He says,

في نار جهنم خالدين فيها

that they will be in the fire of Hell on the Day of Judgement and they will abide therein forever. This means that they will remain in it and they will have no way out of it and they will not cease being in it.

أوليك هم شر البرية

They are the worst of creatures. meaning, they are the worst creation that Allah has fashioned and created. Then Allah informs about the situation of the righteous people who believed in their hearts and performed righteous deeds with their bodies