“So then God’s choice is not dependent on human will, nor on human effort (the totality of human striving), but on God who shows mercy (to whomever He chooses-it is His sovereign gift).” -Romans 9:16
If you read this entire chapter, it talks about God’s purpose and how He uses whatever/whomever to bring about His purpose. There is nothing we can do within ourselves that will make His will come to pass. It is only by faith in the promise He has given us. When He speaks something into existence, it doesn’t matter what is going on in the natural. He spoke it, it is done. It is His purpose and He will bring it to completion. He is not dependent on our actions. He wants us to be dependent on Him and who He is. You are not here by accident. It is God’s purpose for you to be here. He spoke it and He brought you forth for His will.