So, if you carry that back to the logical (illogical) extreme, then ears are all we need to be saved.....
Telling people that "faith" is all they need, can be, and likely is, a HUGE disservice to them when helping teach them Jesus.
What did Jesus tell us to do, right before he ascended into heaven?
"18 And Jesus came up and spoke to them, saying, “All authority has been given to Me in heaven and on earth. 19 [
a]Go therefore and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit, 20 teaching them to observe all that I commanded you; and lo, I am with you [
b]always, even to the end of the age.”