/give gnomq diamond_sword 1 0 {display:{Name:'{"text":"Zenith","color":"red","italic":false}',Lore:['{"text":"Ostrość XX","color":"gray","italic":false}']},HideFlags:1,Enchantments:[{id:"minecraft:sharpness",lvl:20s}]}
to zadziałało, a jak dodać nową linijkę lore?