What role does faith play in the life of Christians today?

The role of faith in the life of Christians today include:
(i) Faith assures Christians of eternal salvation.
(ii) it shows that Christians are no longer under the bond of law but under the grace.
(iii) It is by faith that Christians face the challenges of life with enough courage and confidence.
(iv) Faith is a motivator of Christians for good works, e.g. education, medicine, evangelisation, etc.