What is the New Testament argument against Gnosticism?

I'm aware that the rise of Gnosticism was after the New Testament was written – but it would seem that a lot of the ideas on which it was built were floating around at the time. (Particularly Greek ideas about the uncleanness of the body contrasted with the purity of the mind/spirit). Particularly in 1 Cor 15, but also more generally across the NT – how does the Bible rebut the ideas of Gnosticism? (i.e., that Jesus and subsequent resurrection was physical).