Hebrews 11:8-16.

Last week Abel, Enoch, and Noah showed us how to walk by faith. Now we see how Abraham and Sarah also walked by faith but in difficult circumstances. Between the two of them, difficulty after difficulty is highlighted concerning the promise God made to Abraham and Sarah. But instead of bailing on God in the difficulty, Abraham and Sarah pressed forward "by faith." Main Idea-- We exercise true faith when we trust God's promises in difficult circumstances.