If Jehovah had simply destroyed Adam and Eve, his stated purpose regarding humans would have become empty words.
فَكَانَ يَجِبُ أَنْ يُنْجِبَا ذُرِّيَّةً وَيَمْلَآ ٱلْأَرْضَ وَيُخْضِعَاهَا وَيَتَسَلَّطَا عَلَى كُلِّ ٱلْخَلِيقَةِ ٱلْأَرْضِيَّةِ .‏