"Jesus said, many will come saying I am the Christ (exactly what you are doing...saying he is the Christ) but in their ways they will deny me."
That is not a verse in the Bible. I don't know where you got it, but it is not in the Bible.
*****
Mark 13:5
Watch out that no one deceives you. Many will come in my name, claiming, I am he, and will deceive many.
Don't have time to research more, but there are many warnings.
Actual verse (Mark 13:6):
"Many will come in My name, saying 'I am He!' and will mislead many."
-A8