What is the solution to human problems according to the Christian worldview? What role do grace and faith play in Christian salvation? How do Christians think that the transformation of self and society happen?

According to Christian Jesus is the solution to human problem. The acceptance of Jesus into peoples love they believe has power over all problem.

Faith is to believe, the work of salvation have to be believe by everyone who want to accept Jesus into his or her life without faith in the work that Jesus has done there will be no salvation experience.

Grace is what has been made available for every sinner who want to be saved. When a man have faith in the work of salvation, grace is made available.

Transformation is a function of the heart, and the mind is transformed by the word of God. Hence, when a man is subject to the hearing and doing of the word he becomes transformed and this also affect his environment.