God wants us to be available and willing to do whatever He wants you to accomplish, knowing that He has the power to do it.
Abraham waited a lifetime to have children and when he finally had one, God asked for him. As he was in the act of the sacrifice, God interrupted and intervened to save the son, just as He intervenes to offer His Son for us. He did this to see if Abraham's faith was real or just pretentious, and if his confidence was in God or just in what He had provided. Abraham was confident that God would raise Isaac from the dead. God does not tempt us to see us fail; He seeks to see if we are real.