by water through the Word.
Do NOT limit Christ by saying one is saved by faith ALONE. He never said that. do listen to the words of Jesus who said it is faith+ repentance+baptism+the Eucharist+endurance, not any of these in isolation. Of course, these don't "save us" per se, since it is Christ's sacrifice on the Cross that grants us our salvation that we can accept or reject
The problem happens when one takes one section of the word in isolation.
The only thing that is limiting Christ is saying that His sacrificial death on the cross is not enough and that we have to add something to it.
At that point, then, you are not depending on Christ's FINISHED work on the cross, but on baptism, communion, works, whatever else it is you feel you have to add to it.
Galatians 2:15-21 We ourselves are Jews by birth and not Gentile sinners; 16 yet we know that a person is not justified by works of the law but through faith in Jesus Christ, so we also have believed in Christ Jesus, in order to be justified by faith in Christ and not by works of the law, because by works of the law no one will be justified.
17 But if, in our endeavor to be justified in Christ, we too were found to be sinners, is Christ then a servant of sin? Certainly not! 18 For if I rebuild what I tore down, I prove myself to be a transgressor. 19 For through the law I died to the law, so that I might live to God. 20 I have been crucified with Christ. It is no longer I who live, but Christ who lives in me. And the life I now live in the flesh I live by faith in the Son of God, who loved me and gave himself for me. 21 I do not nullify the grace of God, for if righteousness were through the law, then Christ died for no purpose.