The word is panacea. Pronounced \pan-uh-SEE-uh\. This word is a noun and is defined as
An answer or solution for all problems or difficulties.
Used in a sentence: Those of us that seek an answer to the problems and issues that befall us in life need not travel far, for the panacea that provides us with all these things lies within prayer to Our Father in heaven.
(Matthew ch.21:v.22), (Acts ch.6:v.4), (Philippians ch.1:vs 4,19 and ch.4:v.6), (James ch.5:16)