The mercy of Allah to the unbelievers during times of catastrophe and their ingratitude 6:63-65
6:63 Say, 'Who saves you from the darkness of the land and sea, when you call out to Him humbly and in secret (saying), "If You save us from this, we will be among the thankful."
6:65 Say, 'He is Able to send forth upon you punishment from above you or beneath your feet, or to divide you into discordant factions, and to make some of you taste the affliction of the other.' Look how We make plain Our verses, in order that they understand.