No . your missing the point, God though it necessary that if Abraham is going to be the father of our faith to billions of people including future generation, that his faith be solid, Totally unmovable and also seen as solid by the people, so the people can have faith in God as seen through Abraham's strength.
Many have the strength to give up there life for a causes they believe in , we see this many times today , read it in the news, but to give your child's life, your only child at that , for a cause you believe in is not heard of , many cant even bear to think of it. This was the effect it had on Abraham and thous who looked to him, But God working with Abraham to fulfill his promises , worked with him to bring him to a place that he became father of many nations.
God from Genesis 17:4 "As for me, this is my covenant with you: You will be the father of many nations.
remember, God is always the potter , we are the clay being molded By God