(Proverbs 28:18 KJV) Whoso walketh uprightly shall be saved: but he that is perverse in his ways shall fall at once.
It makes a difference how we live our lives. Again, I accept we are saved by grace and our debt is so vast that we cannot pay the price for our sin by any effort of our own. At the same time there is a demand for us to live righteous lives. Yes Abraham was righteous because of his faith but his faith was only noticed because of his actions. If he had remained in Ur and talked about how much he believed in God I don’t think it would have been accounted to his as righteousness.
God demands our faith but He also demands our obedience. Like the love and marriage of the old song, you “can’t have one without the other”.
So? Trust in God. Act like it. It will make a difference.