Yahchanan (John) 4:25-26, "The woman said to Him; I know that the Messiah comes, and when He comes, He will tell us all things. Yahshua said to her: I am He speaking to you."
Deuteronomy 18:18-19, "I will raise up for them a Prophet like you from among their brothers, and I will put My words in His mouth, and He will tell them everything I command Him. Whoever will not listen to My words, which He speaks in My Name, I will judge him for it"
"listen" is word #8085 שָׁמַע shama` {shaw-mah'}
Brown-Driver-Briggs (Old Testament Hebrew-English Lexicon)
A primitive root; to hear intelligently (often with implication of attention, obedience, etc.; causatively to tell, etc.)
Hebrew Word Study (Transliteration-Pronunciation Etymology & Grammar) - 1) to hear, listen to, obey
Luke 6:46, "And why call Me; Ruler! Ruler! and do not the things which I say?"
We must not only believe in Messiah, but we must obey Messiah, for He perfectly teaches the doctrines of Yahweh.