New Living Translation
Even when there was no reason for hope, Abraham kept hoping—believing that he would become the father of many nations. For God had said to him, “That’s how many descendants you will have!”

American Standard Version
Who in hope believed against hope, to the end that he might become a father of many nations, according to that which had been spoken, So shall thy seed be.

Berean Study Bible
Against all hope, Abraham in hope believed and so became the father of many nations, just as he had been told, “So shall your offspring be.”

Douay-Rheims Bible
Who against hope believed in hope; that he might be made the father of many nations, according to that which was said to him: So shall thy seed be.

English Revised Version
Who in hope believed against hope, to the end that he might become a father of many nations, according to that which had been spoken, So shall thy seed be.

King James Bible
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.

World English Bible
Who in hope believed against hope, to the end that he might become a father of many nations, according to that which had been spoken, "So will your seed be."

Young's Literal Translation
Who, against hope in hope did believe, for his becoming father of many nations according to that spoken: 'So shall thy seed be;'

Romans 4:18 Additional Translations ...