It is useful to compare the other two scriptural definitions of faith: Now faith is the substance of things hoped for, the evidence of things not seen (Heb 11:1). Faith is not to have a perfect knowledge of things; therefore if ye have faith ye hope for things which are not seen which are true (Alma 32:21). From Paul we learn that faith is both substantive and evidential. From Alma, we learn that it must be based on things which are true, even if it is not a perfect knowledge.