diff --git a/cogs/config.py b/cogs/config.py
index 9cc8b6a..187aac8 100644
--- a/cogs/config.py
+++ b/cogs/config.py
@@ -9,6 +9,7 @@ from discord import (
 )
 from discord.ext.commands import Cog
 from discord.utils import basic_autocomplete
+from libbot.i18n import in_every_locale, _
 
 from classes import PycordGuild
 from classes.pycord_bot import PycordBot
@@ -21,25 +22,41 @@ class Config(Cog):
     def __init__(self, bot: PycordBot):
         self.bot: PycordBot = bot
 
-    # TODO Introduce i18n
-    command_group: SlashCommandGroup = SlashCommandGroup("config", "Guild management")
+    command_group: SlashCommandGroup = SlashCommandGroup(
+        name="config",
+        description=_("description", "commands", "config"),
+        description_localizations=in_every_locale("description", "commands", "config"),
+    )
 
-    # TODO Introduce i18n
     @command_group.command(
         name="set",
-        description="Configure the guild",
+        description=_("description", "commands", "config_set"),
+        description_localizations=in_every_locale("description", "commands", "config_set"),
+    )
+    @option(
+        "category",
+        description=_("description", "commands", "config_set", "options", "category"),
+        description_localizations=in_every_locale(
+            "description", "commands", "config_set", "options", "category"
+        ),
+        required=True,
     )
-    @option("category", description="Category where channels for each user will be created", required=True)
     @option("channel", description="Text channel for admin notifications", required=True)
     @option(
         "timezone",
-        description="Timezone in which events take place",
+        description=_("description", "commands", "config_set", "options", "timezone"),
+        description_localizations=in_every_locale(
+            "description", "commands", "config_set", "options", "timezone"
+        ),
         autocomplete=basic_autocomplete(autocomplete_timezones),
         required=True,
     )
     @option(
         "language",
-        description="Language for bot's messages",
+        description=_("description", "commands", "config_set", "options", "language"),
+        description_localizations=in_every_locale(
+            "description", "commands", "config_set", "options", "language"
+        ),
         autocomplete=basic_autocomplete(autocomplete_languages),
         required=True,
     )
@@ -56,7 +73,9 @@ class Config(Cog):
         try:
             timezone_parsed: ZoneInfo = ZoneInfo(timezone)
         except ZoneInfoNotFoundError:
-            await ctx.respond(f"Timezone {timezone} was not found.")
+            await ctx.respond(
+                self.bot._("timezone_invalid", "messages", locale=ctx.locale).format(timezone=timezone)
+            )
             return
 
         await guild.update(
@@ -67,44 +86,51 @@ class Config(Cog):
             language=language,
         )
 
-        # TODO Make a nice message
-        await ctx.respond("Okay.")
+        await ctx.respond(self.bot._("config_set", "messages", locale=ctx.locale))
 
-    # TODO Introduce i18n
     @command_group.command(
         name="reset",
-        description="Reset the guild's configuration",
+        description=_("description", "commands", "config_reset"),
+        description_localizations=in_every_locale("description", "commands", "config_reset"),
+    )
+    @option(
+        "confirm",
+        description=_("description", "commands", "config_reset", "options", "confirm"),
+        description_localizations=in_every_locale(
+            "description", "commands", "config_reset", "options", "confirm"
+        ),
+        required=False,
     )
-    @option("confirm", description="Confirmation of the operation", required=False)
     async def command_config_reset(self, ctx: ApplicationContext, confirm: bool = False) -> None:
         if confirm is None or not confirm:
-            # TODO Make a nice message
-            await ctx.respond("Operation not confirmed.")
+            await ctx.respond(self.bot._("operation_unconfirmed", "messages", locale=ctx.locale))
             return
 
         guild: PycordGuild = await self.bot.find_guild(ctx.guild.id)
 
         await guild.purge(self.bot.cache)
 
-        # TODO Make a nice message
-        await ctx.respond("Okay.")
+        await ctx.respond(self.bot._("config_reset", "messages", locale=ctx.locale))
 
-    # TODO Introduce i18n
     @command_group.command(
         name="show",
-        description="Show the guild's configuration",
+        description=_("description", "commands", "config_show"),
+        description_localizations=in_every_locale("description", "commands", "config_show"),
     )
     async def command_config_show(self, ctx: ApplicationContext) -> None:
         guild: PycordGuild = await self.bot.find_guild(ctx.guild.id)
 
         if not guild.is_configured():
-            # TODO Make a nice message
-            await ctx.respond("Guild is not configured.")
+            await ctx.respond(self.bot._("guild_unconfigured_admin", "messages", locale=ctx.locale))
             return
 
-        # TODO Make a nice message
         await ctx.respond(
-            f"**Guild config**\n\nChannel: <#{guild.channel_id}>\nCategory: <#{guild.category_id}>\nTimezone: {guild.timezone}\nLanguage: {guild.language}"
+            self.bot._("config_show", "messages", locale=ctx.locale).format(
+                channel_id=guild.channel_id,
+                category_id=guild.category_id,
+                timezone=guild.timezone,
+                language=guild.language,
+            )
         )
 
 
diff --git a/config_example.json b/config_example.json
index d809b7b..a6dfc60 100644
--- a/config_example.json
+++ b/config_example.json
@@ -1,5 +1,5 @@
 {
-    "locale": "en",
+    "locale": "en-US",
     "debug": false,
     "bot": {
         "owners": [
diff --git a/locale/en-US.json b/locale/en-US.json
new file mode 100644
index 0000000..f40daae
--- /dev/null
+++ b/locale/en-US.json
@@ -0,0 +1,44 @@
+{
+    "messages": {
+        "operation_unconfirmed": "Operation not confirmed.",
+        "guild_unconfigured": "Guild is not configured. Please, report this to the administrator.",
+        "guild_unconfigured_admin": "Guild is not configured. Please, configure it using `/config set`.",
+        "timezone_invalid": "Timezone **{timezone}** was not found. Please, select one of the timezones provided by the autocompletion.",
+        "config_set": "Configuration has been updated. You can review it anytime using `/config show`.",
+        "config_reset": "Configuration has been reset. You can update it using `/config set`, otherwise no events can be held.",
+        "config_show": "**Guild config**\n\nChannel: <#{channel_id}>\nCategory: <#{category_id}>\nTimezone: {timezone}\nLanguage: {language}"
+    },
+    "commands": {
+        "config": {
+            "description": "Guild management"
+        },
+        "config_set": {
+            "description": "Configure the guild",
+            "options": {
+                "category": {
+                    "description": "Category where channels for each user will be created"
+                },
+                "channel": {
+                    "description": "Text channel for admin notifications"
+                },
+                "timezone": {
+                    "description": "Timezone in which events take place"
+                },
+                "language": {
+                    "description": "Language for bot's messages"
+                }
+            }
+        },
+        "config_reset": {
+            "description": "Reset the guild's configuration",
+            "options": {
+                "confirm": {
+                    "description": "Confirmation of the operation"
+                }
+            }
+        },
+        "config_show": {
+            "description": "Show the guild's configuration"
+        }
+    }
+}
diff --git a/locale/en.json b/locale/en.json
deleted file mode 100644
index 699534c..0000000
--- a/locale/en.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-    "messages": {}
-}
diff --git a/locale/uk.json b/locale/uk.json
deleted file mode 100644
index 0848176..0000000
--- a/locale/uk.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-    "messages": {}
-}
\ No newline at end of file