It was by grace that God chose to save us,because he love us. Knowing that the flesh was weak,and sinful ,and cannot worship Him in truth and in spirit. Which we cannot escape until death. God's only wish is that we come to him,believe in his son, Jesus Christ,worship him only in truth and spirit,and we will be saved from condemnation. He did not say he would remember our past sins no more, but he would remember our sins no more. HEBREWS;8;12; For I will be merciful to their unrighteousness,and their sins,and their iniquities will I remember no more. Willful sin to a christian is dangerous, just because he said he would remember them no more,does't mean you can sin at will. because he will not be mocked.,and you will still be living a sinful life. You have to stumble and fall into sin as a christian to be forgiven, and he will pick you up ,but if you purposely walk into sin then he will chasten you, and it won't be pleasurable.