N
Corrected version
/give @p netherite_sword{Enchantments:[{id:sharpness,lvl:5},{id:knockback,lvl:2},{id:fire_aspect,lvl:2},{id:looting,lvl:2},{id:sweeping,lvl:3},{id:unbreaking,lvl:3},{id:mending,lvl:1}],display:{Name:'[{"text":"Wool's Deity Sword"}]'}} 1
Like it has already been commented, always say what error you are getting, as your problem might not even be an error problem, but a "wrong" answer instead (for example, it gives you the item but no custom name).
Looking from the command, it looks like it has been parsed wrongfuly, meaning the amount of and/or order of {'s and ['s are wrong, let us expand the command and take a look:
///
By expaning, like @Fredy31 has mentioned in the comments, open this line of command in any text editor and:
Every time you find an opening { or [ you create a new line with enter and ident it with blank spaces with tab. Every time you have to tab, make sure to tab further than the last one.
If you find ,'s, simply create a new line with same ident space as the last line.
Every time you find a closing } or ], also create a new line but, this time, reduce the identation by one.
////
/give @p netherite_sword{ 1
How to check if a nbt is right?
The idea begind these structures (Called https://en.wikipedia.org/wiki/JSON#Syntax ), is:
{ } Are dictionaries, meaning they expect a group of key:value where value can be another a data (integer, string...), dictionary or a list. Each item (key:values) is separated by ,'s. They start with a { and end with }
[ ] are lists. They recive only a value separated by ,'s. Value, again, can be any data, dictionaries or other lists.
So what does exactly the game expect? Let's ignore what is inside Enchantments and display:
/give @p netherite_sword{
Enchantments:[], 1
Now, filling what is inside display and Enchantments:
/give @p netherite_sword{
Enchantments:[
{id:sharpness,lvl:5},
{id:knockback,lvl:2},
{id:fire_aspect,lvl:2},
{id:looting,lvl:2},
{id:sweeping,lvl:3},
{id:unbreaking,lvl:3},
{id:mending,lvl:1}
],
display:{
Name:'[
{"text":"Wool's Deity Sword"}
]'
}
}
1
Ps.: Even if your json is well structured, you stil have to respect the https://minecraft.fandom.com/wiki/Player.dat_format#Item_structure . Here, Name must be inside display. Both Enchantments and display stay close to the root.
{
Enchantments:[],
display:{Name:[]}
}
