Original sentence: Jihad appears frequently in the Qur'an and common usage as the idiomatic expression "striving in the way of God (al-jihad fi sabil Allah)"
Edited sentence: Major Stephen Collins Coughlin's Master's Thesis  meticulously documents the status of Jihad in Islamic Law, and provides powerful evidence that Jihad cannot be separated from Islam.The legal definition of jihad is “to wage war against non-Muslims to establish the religion.”  Jihad appears frequently in the Qur'an and common usage as the idiomatic expression "striving in the way of God (al-jihad fi sabil Allah)"