Abram believed (had faith) the Lord, and he credited it to him as righteousness.
Without faith it is impossible to please God.
The apostles said to the Lord, "Increase our faith!"
Can you imagine that first conversation between Abram and Sarai? “I don’t know, exactly. But I can’t get away from the fact that God has told me we need to go.”
The Bible says, “We walk by faith, not by sight.” (2 Corinthians 5:7) This is obviously easier said than done. When we look at the circumstances of life we can be easily overcome by what we see in the natural and our faith is zapped. I believe we need to pray for spiritual sight to see what God sees. To not live by how we feel, but according to God and His Word.
The bottom line was Abraham just had to believe in God and His promises. Hudson Taylor once said, “We do not need a great faith, but faith in a great God.” Like Abraham and many other champions in the Bible we have to put our faith, whether strong or weak, into our Almighty God.