Belief
Faith
noun, verbal noun
Dedicate your life to what you believe in and you'll have really strong belief and faith in whatever that thing is. Just try to dedicate yourself to something nice.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
私は日本国民全員が神道を信奉すべきだと思います。
I think all Japanese citizens should believe in Shinto.