1)
What does the verse teach?
1.
Rashi: If Hashem wanted to destroy a person, He does not need a pretext. Immediately He can gather in his Ru'ach and Neshamah. They are His - He blew them into man. No one can protest against Him!
2.
Ibn Ezra: If Hashem would put His heart to man, like "v'Chi Sashis Elav Libecha 1 ", immediately his Ru'ach would be gathered - "veha'Ru'ach Tashuv."
3.
Ibn Ezra (15): Some explain, if man would put his heart to Hashem 2 [he would die].


