I'm curious as to your definition of Messiah, but that is probably a topic for another thread--and only if you wish.
I'll give you a brief answer here and if you still want to talk about it we can make another thread.
Messiah means 'anointed'. The term (mashiach) is applied in the Bible to those anointed with oil kings and priests. 'The' Messiah is simply Israel's expected King who will bring in an idyllic golden age. It will be as though God is ruling in the form of a man.
This is Jesus. He is not God; but he is God's exalted agent on Earth. So he is called 'the son of God', the 'word of God', etc. The Word of God is just God's divine self-expression. It is one of God's attributes personified. You see this in the Old Testament with personified Wisdom, and in the works of Philo with the Word (Logos). Jesus embodies this attribute (figuratively, not literally) because he reveals the nature and will of God in the most perfect way.
There were many Jewish traditions about Messiah. Some said that the sort of Messiah Israel would get, would depend on their conduct. If they are righteous, they will get a conquering king. If they are sinful, they will get a suffering servant. This was meant to reconcile the different pictures of Messiah in the Old Testament.
As a Christian I believe that this mystery is solved by observing that the work of Messiah is not yet finished. He has begun a good work in the hearts of believers, by the power of God's spirit, and he will come again to finish it. God will set all things under his feet, and through him, all the nations will truly be blessed.