Men are saved by grace alone through faith alone in Jesus Christ alone for God's glory alone according to the Holy Bible which alone is our only authority for faith and conduct.
False traditions of men
You will get no argument from me that each is a significant part or component of salvation. Nor will I argue that it is beyond God's power to grant salvation for any reason. However, our shared faith has a history of covenants between God and man. These covenants were a conditional agreement or promise that required specific actions of man in order for God to keep the promise. These actions are our works of faith or the manifestation of the "solas" in our thoughts and in our words, in what we have done and what we have failed to do. That the prior Covenants were broken is not in question. I do not believe that God would unilaterally break a promise, and know that man has a history of doing just that.
The New and Everlasting Covenant is not a pact between God and mankind as were the prior Covenants. It is a conditional pact between God and each of us individually requiring works of faith and sacraments. If we keep out pact we gain Salvation, if we break it Salvation will be lost.