command `EnableSyntaxExtension` is not available

[debaghtk]

I am using pathogen to install vim-clojure-highlight . I added these lines to my ~/.vimrc

autocmd BufRead *.clj try | silent! Require | catch /^Fireplace/ | endtry
autocmd Syntax clojure EnableSyntaxExtension
autocmd VimEnter * RainbowParenthesesToggle
autocmd Syntax clojure RainbowParenthesesLoadRound
autocmd Syntax clojure RainbowParenthesesLoadSquare
autocmd Syntax clojure RainbowParenthesesLoadBraces