38وَيَقولونَ مَتىٰ هٰذَا الوَعدُ إِن كُنتُم صادِقينَMuhammad AsadBut they [who reject My messages are wont to] ask, "When is that promise [of God's judgment] to be fulfilled? [Answer this, O you who believe in it,] if you are men of truth!"1The Qur'anic answer to this question is given in 7:187.