Prophet Abraham - 14:6
"When Moses said to his people, "Remember the favor of Allah upon you. He delivered you from the men of Pharaoh who inflicted on you the worst of torture, slaughtering your sons and leaving your women alive. This was a great test for you from your Lord."
Cruelty and torture are worse than killing:
The Cow/2:191
Fight them wherever you meet them and drive them out from wherever they drive you out; oppression and torture are worse than killing. Do not fight them unless they fight you near the Holy Mosque. If they attack you, attack them back. Such is the punishment of the disbelievers.
The Cow/2:217
"They ask you about fighting in the Holy Month. Say: "Fighting on it is a great sin. But to turn away from the way of Allah and to be ungrateful to Him and to the Holy Mosque and to drive out its people from it is a greater sin with Allah. For oppression and cruelty is a greater crime than killing."If they could, they would fight you until they turn you back from your religion. Whoever of you turns away from his religion and dies as an unbeliever, all that he did will be in vain in this world and in the Hereafter. They are the people of the Fire and will abide therein forever."