Now the Lord said to Abram, "Go from your country and your kindred and your father's house to the land that I will show you."
Consider the difficulty of God's command to Abram.
In the ancient world, to ask people to leave their ancestral home was to ask the impossible. But Abram obeys. He leaves Ur. He leaves Ur (in modern Iraq) and travels 650 miles to Haran (in modern Turkey), and then later travels 450 miles to Canaan (or modern Israel).
Why did Abram obey God? Simple. He trusted God. He somehow believed in God. He believed God was God and God knew best and God was good and God was to be obeyed.
By faith Abraham obeyed when he was called to go out to a place that he was to receive as an inheritance. And he went out, not knowing where he was going (Hebrews 11:8).
And without faith it is impossible to please him, for whoever would draw near to God must believe that he exists and that he rewards those who seek him (Hebrews 11:6).
God is still looking for people who dare to trust him. He is still looking for people who believe that he is God and that God knows best and God is good and that God is to be obeyed.
Do you want to be one of those people who live by faith and obey God? Even when it's hard? Even when you don't know where you're going?