As we have seen throughout the Old Testament, the atonement relationship between God and man was never limited to blood sacrifices. There were many means by which a human being obtained forgiveness from God for wrongdoing, including fasting, repentance and prayer. Therefore to limit God’s forgiveness to blood atonement is not only unbiblical but also a gross injustice to God’s merciful nature.
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dreams and converting to Islam:http://thefactsaboutislam.blogspot.co.uk/2014/03/christians-are-having-dreams-and.html