"Say: 'People of the Book (Christians and Jews), you stand for nothing until you observe the Torah and the Gospel and that which is revealed to you from your Lord." Sura 5:68 (Al-Maida)
"Perfected are the words of your Lord in truth and justice. None can change them. He is the Hearing, the Knowing." Sura 6:115 (AI-An'am)
Argument (A):
- 1. If the Gospel was a revelation from God, then the Gospel is God’s word.
2. The Gospel was a revelation from God (Sura 5:47, 5:68)
3. Therefore, the Gospel is God’s word (via modus ponens).
4. If God’s word cannot be changed, then the Gospel found in the New Testament is God’s word.
5. God’s word cannot be changed (Sura 6:115)
6. Therefore, the Gospel found in the New testament is God’s word (via modus ponens).
- 1. If the Quran is the word of God, then the Gospel was not changed.
2. The Gospel was changed.
3. Therefore, the Quran is not the word of God (via modus tollens).