Hebrews 11:7-8, 17

Faith opened Noah’s heart to receive revelation and warnings from God about what was coming, even things that had never been seen. But he stepped out in reverent obedience to God and built an ark that would save him and his family. By his faith the world was condemned, but Noah received God’s gift of righteousness that comes by believing. Faith motivated Abraham to obey God’s call and leave the familiar to discover the territory he was destined to inherit from God. So he left with only a promise and without even knowing ahead of time where he was going, Abraham stepped out in faith.

Faith operated powerfully in Abraham for when he was put to the test he offered up Isaac. Even though he received God’s promises of descendants, he was willing to offer up his only son!