Here’s the Wikipedia Def ( I know not the bible but… decent start)
Terrorism is the systematic use or threatened use of violence to intimidate a population or government and thereby effect political, religious, or ideological change.[1][2] Acts of terrorism are not intended to merely victimize or eliminate those who are killed, injured, or taken hostage, but rather to intimidate and influence the societies to which they belong. Modern terrorism has come to be defined in part by the influential power of the mass media, which terrorists co-opt in their efforts to amplify and broadcast feelings of intense fear and anger. As a type of unconventional warfare, terrorism is designed to weaken or supplant existing political landscapes through capitulation or acquiescence as opposed to subversion or direct military action.
“Terrorist attacks” are usually characterized as “indiscriminate,” “targeting of civilians,” or executed “with disregard for human life.” The term “terrorism” is often used to assert that the political violence of an enemy is immoral, wanton, and unjustified. According to the definition of terrorism typically used by states, academics, counter-terrorism experts, and non-governmental organizations, “terrorists” are actors who don’t belong to any recognized armed forces, or who don’t adhere to the laws of war, and who are therefore regarded as “rogue actors”." Those accused of being “terrorists” rarely identify themselves as such, and instead typically use terms that refer to their ideological or ethnic struggle, such as: separatist, freedom fighter, liberator, revolutionary, vigilante, militant, paramilitary, guerrilla, rebel, jihadi or mujaheddin, or fedayeen.
Terrorism has been utilized by a broad array of organizations to further their objectives, including both right-wing and left-wing political parties, nationalistic and religious groups, revolutionaries, and ruling governments