Here is yet another occasion where the Lord’s discussion of our salvation omits any mention of the Protestant’s sola fide view:
If any one hears my sayings and does not keep them, I do not judge him; for I did not come to judge the world but to save the world. He who rejects me and does not receive my sayings has a judge; the word that I have spoken will be his judge on the last day. For I have not spoken on my own authority; the Father who sent me has himself given me commandment what to say and what to speak. And I know that his commandment is eternal life. What I say, therefore, I say as the Father has bidden me. (John 12:47-50, RSV2CE)
I am not exactly sure how one could read sola fide into this passage, since it deals expressly with obedience to Christ’s commandments (and consequently the Father’s). Jesus expects us to keep His commands if we are His people. We see the same themes in another passage in St. John’s gospel:
If you love me, you will keep my commandments. … He who has my commandments and keeps them, he it is who loves me; and he who loves me will be loved by my Father, and I will love him and manifest myself to him. … He who does not love me does not keep my words; and the word which you hear is not mine but the Father’s who sent me. (John 14:15, 21, 24, RSV2CE; emphasis added).
I am almost certainly repeating myself, but how credible is it to say that one who does not love God will be saved? But if we do not obey Him, then we do not love Him. There is no way around it: our love for our Savior is demonstrated by what we do. There is more at work here than mere sola fide.
It is also worth observing that once again we see the Reformed idea of “total depravity” is left in ruins by the words of our Lord: if there is literally no one who does good at all, then there can be no one who loves Jesus, and there is obviously a population of zero in heaven (outside of God Himself and His holy angels). Obedience is not a dirty word, and it is not irrational to suppose that God would give us commands the observance of which show our love for Him.