Unable to use OP enchants

When I use op enchant commands aka a command like:
/give xX_Eman_Xx diamond_sword 1 0 {ench:[

{id:smite,lvl:100}

]}
no matter what enchant I put (and multiple) it always enchants it with protection of the level I specified. I tried restarting my client, restarting my computer, and deleting the .minecraft folder entirely and nothing worked.