The Bible says in plain language that God created the heavens and the earth in six literal days. Jesus is the Word of God. If you deny the fact that God created the earth in such a way that all life was immediately perfect and did not need millions of years to evolve, then you are denying His Word. He is wise and powerful enough to do things instantly. When Jesus spoke words, it happened. When God said "Let there be light", it happened. Likewise, we can find an example of this in the New Testament in Markus 4:38
And he arose, and rebuked the wind, and said unto the sea, Peace, be still. And the wind ceased, and there was a great calm.
To deny God's creation (not evolution) is to deny the essence of Who Jesus was. If God couldn't create humans right away instead of using evolution, then Jesus wasn't able to perform miracles either like these and thus he cannot be the Son of God, the Messiah. Therefore there would be no savior for mankind. And yet, many Christians who believe in evolution, deny His power and His Words.