Why did humanists blend their ideas with Christian ideas?

They were mostly leaders of the Christian faith.
They wished to create their own religious artwork.
They accepted the Christian faith as a major part of their life.
They wanted to disprove classical teachings about the world.

They accepted the Christian faith as a major part of their life. Humanists believed that Christianity and its teachings could coexist and complement their own beliefs and principles. They saw value in integrating Christian ideas with their humanistic philosophy to create a more well-rounded and holistic worldview.