Prevent access to folder and add a message using htaccess

RewriteEngine On
RewriteBase /
RewriteRule ^ - [F]
ErrorDocument 403 "Your message here."

or recursively:

Order Allow,Deny
Deny from all
ErrorDocument 403 "Your message here"
Require ip 100.30.128.4 117.40.128.5
ErrorDocument 403 "Access from..."