`/give @s enchanted_book{StoredEnchantments:[{id:”minecraft:mending”,lvl:1s}]} 1`
`/give @p enchanted_book{StoredEnchantments:[{id:”minecraft:mending”,lvl:1s}]} 1`
`/give YourName enchanted_book{StoredEnchantments:[{id:”minecraft:mending”,lvl:1s}]} 1`