5.35 – You who believe! . . . struggle in His way
The Quran contains seven commands to “struggle” using the Arabic verb jāhada, from which the word jihad comes. Verse 35 is the first occurrence of this imperative in the canonical sequence. The sense of struggle that the Quran intends in each command may be partly determined from the context. If the context is a battle scene, or if struggle appears close to commands to fight or kill (qatala, e.g., 5.33), struggle picks up the sense of fighting.
See the analysis of these commands at 66.9.