In The Name of Allah, The Most Merciful, The Bestower of Mercy.
Imam As-Sadi [may Allah have mercy upon him] said:
Regarding the Jihaad that this religion established, which is the best type of Jihaad, enjoining all good and forbidding all evil, the intention behind it is to ward off the aggression of the aggressors who want to infringe upon the rights of this religion and obstruct its call. It is not done out of greed, covetousness, or to satisfy the soul’s desires. Whoever examines the evidence for this principle, the biography of the Prophet and his companions, and how they dealt with their opponents, would know – without a doubt – that Jihaad is one of the necessities, and it repels the animosity of the aggressors. (footnote a) The same holds true for enjoining good and forbidding evil because this religion cannot be established in a righteous manner unless its followers adhere to its principles and practices, comply with its commands, which is the very goal of righteousness, and avoid what it has forbidden. (footnote b)
The adherents of this religion committed themselves to these matters to prevent some of them with souls inclined to wrongdoing from daring to engage in some of the forbidden deeds, as well as failing to perform the obligatory duties that one is able to perform, and this cannot be done without commands and prohibitions. This is one of the religion’s loftiest virtues and the greatest prerequisite for its establishment, just as it rectifies criminals from among its adherents, disciplines them, keeps them from engaging in vices, and leads them to lofty (praiseworthy) behaviour. And one of the greatest acts of wrongdoing and harm to them and society, especially in regards to the obligations that the Shariah requires to be carried out, is to grant them freedom without the divine restrictions while they seek to adhere to the religion, subjected to its rulings and bound by its laws. (1)
Read ‘Jihad according to Islam’ – prepared by Shaikh Abu Khadeejah from the works of Al-Allaamah Saaleh al-Fawzaan: https://abukhadeejah.com/salafi-shaikh-fawzaan-on-jihaad-in-our-times-and-the-guidelines-of-jihaad-according-to-islam/
Footnote b: When Does Enjoining Good and Forbidding Evil Concern Me?
[Ref 1: Ad-Durra Al-Mukhtasar Fee Mahaasin Deen Al-Islaamiy. pages 20-22. slightly paraphrased]