So it begins to sound like you must trust only so long as you grab at not dying but then you have Gods hands tied and can not grow in trust or trust anything ELSE He said. Which is Israel in the desert.
I don't see this a fair telling of this view. You make it sound like someone grasping for gain.
Abraham believed God, and that believing, at that time, on that particular day, he believed God, and it was counted to him for righteousness. Paul makes big point of saying this righteousness was before circumcision, and, I'd add, before the offering of Isaac.
John wrote that those who receive Jesus, believing in His Name, God begets them. We are born from God. Abraham received righteousness even before he demonstrated the works of faith, and likewise before pleading with God to accept Ishmael, which was not of faith.
I believed God, and God gave me righteousness. Maybe I sound like a judge of myself, but I believe, and therefore I speak.
God has tied His Own hands, in that He has committed Himself to complete our salvation.
Much love!