Simplify the following text for a Grade 8 native English-speaking person.
Original: For other uses , see Last Judgment , Judgment Day and Qiyamah The Last Judgment , Final Judgment , Day of Judgment , Judgment Day , or The Day of the Lord in Christian theology , is the final and eternal judgment by God of every nation .
Simplified: In Christianity , the Last Judgment , Final Judgment , Judgment Day , or Day of the Lord is where God judges people in all nations at the end of the world .