Notice how God creates reality through faith. In Genesis he performed a miracle for Abraham. He made a statement that was humanly impossible but God made it so.
Gen 15:5-6
5 And he brought him forth abroad, and said, Look now toward heaven, and tell the stars, if thou be able to number them: and he said unto him, So shall thy seed be.
6 And he believed in the LORD; and he counted it to him for righteousness. (KJV)
God told Abraham that his physical descendants would be as many as the stars in heaven. Now when this statement was made, Abraham and Sarah were already past the child bearing age.
Nevertheless, God said it would happen. Now what is Abraham to do? He believed God! He acted upon this information. Believe, in the Bible, means acting upon what God said to us.
Then what does God do in response to Abrahams acting upon His statement concerning a child for himself and Sarai. (Abrahams old age made no difference to God.) When he acted on His word, God did two things.
First, He counted Abrahams action upon His promise to have children the same as righteousness. (The word righteousness means cleared of all guilt.) Whatever...