[pinkpanther]

I myself will call to account anyone who does not listen to my words that the prophet speaks in my name. - Deut 18:20

Read that. It is critical that you listen to this prophet who speaks in the name of God. Who is that prophet?

From the Christian perspectives...

Jesus is the ultimate Prophet and best epitomizes the prophet in Deuteronomy 18:15–19. 

He spoke of things to come, announcing His coming kingdom. He revealed and explained His Father (John 1:18; 14:10–11). He provided an incredible panorama of the future and offered a blessing to all who hear and heed His word (Revelation 1:3). 

All who believe in Him will have eternal life (John 6:47), and no one who believes in Him will be disappointed or disturbed (Isaiah 28:16). This Prophet is trustworthy because He is much more than simply a prophet. He is the Christ, the Son of the living God (Matthew 16:16). The people understood that this meant He was God (John 5:18).