Two of the Five Solas are:
- Sola Gratia: Salvation by Grace Alone
- Sola Fide: Justification by Faith Alone
If salvation is by "grace alone", how can "faith alone" be added as well? Only one of these two should be chosen in order to use the term "alone". From scripture grace and faith work together, e.g.:
... we have also obtained access by faith into this grace in which we stand ... (Romans 5:2, ESV)
For by grace you have been saved through faith. (Ephesians 2:8, ESV)
Suppose someone builds a bridge over a chasm to rescue a group of hikers from a great disaster, and announces to all hikers that the bridge has been built. Arriving on the safe side, someone tells the hikers: "You arrived here only through the goodwill of the bridgebuilder", and "You arrived here only because you actually crossed the bridge". How logical is that? Clearly, the two must work together (and not together, although separately alone)?