NET
18 Against hope Abraham believed in hope with the result that he became the father of many nations according to the pronouncement, “so will your descendants be.”
Darby
18 who against hope believed in hope to his becoming father of many nations, according to that which was spoken, So shall thy seed be:
KJV
18 Who against hope believed in hope, that he might become the father of many nations, according to that which was spoken, So shall thy seed be.