A major difference between Catholic and Protestant theology is belief in free will, in which both Luther and Calvin deny. Because of the Protestant creation of the doctrine of "sola fide", or that faith alone is sufficient for salvation, these reformist taught that each person does not cooperate in their own salvation. In essance, Protestant doctrine is that all of our moral choices are predetermined. Salvation is ours to accomplish, it is not something that we have no control over. The doctrine of sola fide directly contradicts many scripture passages and leads many astray.
I have set before you life and death, the blessing and the curse. Choose life, then, that you and your descendants may live, by loving the LORD, your God, heeding his voice, and holding fast to him. Deuteronomy 30:19-20
Not only is each individual free to choose, he is obliged to choose.
No one experiencing temptation should say, 'I am being tempted by God'; for God is not subject to temptation to evil, and he himself tempts no one. Rather, each person is tempted when he is lured and enticed by his own desire. James 1:13-15
This passage cannot make it much more clear. The Protestant position relieves each person of the responsibility of making a choice. But it is obvious that it is not God who tempts us and therefore not God who makes our choices for us.Because I called and you refused, I extended my hand and no one took notice. Proverbs 1:24
Yes, God calls us but we can refuse. He invites us but does not compel us.
But if, in seeking to be justified in Christ, we ourselves are found to be sinners, is Christ then a minister of sin? Of course not! Galatians 2:17
The Protestant doctrine begins to look more and more like an easy out for those that do not want to accept responsibility for their own salvation.
Ever since the creation of the world, his invisible attributes of eternal power and divinity have been able to be understood and perceived in what he has made. As a result, they have no excuse; for although they knew God they did not accord him glory as God or give him thanks. Instead, they became vain in their reasoning, and their senseless minds were darkened. Romans 1:20-21
Paul here warns us that the glory of God is evident to all but not everyone chooses to acknowledge it. Notice that all do have the choice. particularly like the line in the above passage they became vain in their reasoning. By what reasoning could the Protestant Reformers been using to invent their doctrine of salvation by faith alone?