Faith.

Hebrews11:6

And without faith it is impossible to please God, because anyone who comes to him must believe that he exists and that he rewards those who earnestly seek him.

Hebrews11:8

By faith Abraham, when called to go to a place he would later receive as his inheritance, obeyed and went, even though he did not know where he was going.

Hebrews11:13-16

All these people were still living by faith when they died. They did not receive the things promised; they only saw them and welcomed them from a distance.  And they admitted that they were aliens and strangers on earth.  People who say such things show that they are looking for a country of their own. I f they had been thinking of the country they had left, they would have had opportunity to return.  Instead they were longing for a better country a heavenly one. Therefore God is not ashamed to be called their God, for he has prepared a city for them. 

Hebrews12:2

Let us fix our eyes on Jesus, the author and perfecter of our faith, who for the joy set before him endured the cross, scorning its shame, and sat down at the right hand of the throne of God.