For salvation, yes. You are not to rely on any works to be "justified as righteous".
Was that your belief? I am fine, there are certainly many Christians who believe in using works to be justified before God, you are in good company.
No I do not agree. Works are not "used" for salvation. That would be manipulation. You cannot fool God. That is why He tests our faith. I thought I made it clear that works is not for salvation. I also made the point clear that faith without works does not save anyone. Read James 2. I will provide further scripture to show you what I mean.
Romans 10:16 But not everyone welcomes the Good News, for Isaiah the prophet said, “Lord, who has believed our message?” 17 So faith comes from hearing, that is, hearing the Good News about Christ. 18 But I ask, have the people of Israel actually heard the message? Yes, they have:
“The message has gone throughout the earth,
and the words to all the world.”
19 But I ask, did the people of Israel really understand? Yes, they did, for even in the time of Moses, God said,
“I will rouse your jealousy through people who are not even a nation.
I will provoke your anger through the foolish Gentiles.”
20 And later Isaiah spoke boldly for God, saying,
“I was found by people who were not looking for me.
I showed myself to those who were not asking for me.”
21 But regarding Israel, God said,
“All day long I opened my arms to them,
but they were disobedient and rebellious.”
Faith comes from hearing the Word. Here we see the jews heard the Word and understood the message yet they were disobedient and rebellious. They were in turn rejected. Anyone who denies Christ will also be denied before the Father. So faith comes by hearing but it is noted that it requires an action. Being obedience or works.
James 1:21 So get rid of all the filth and evil in your lives, and humbly accept the word God has planted in your hearts, for it has the power to save your souls.
22 But don’t just listen to God’s word. You must do what it says. Otherwise, you are only fooling yourselves. 23 For if you listen to the word and don’t obey, it is like glancing at your face in a mirror. 24 You see yourself, walk away, and forget what you look like. 25 But if you look carefully into the perfect law that sets you free, and if you do what it says and don’t forget what you heard, then God will bless you for doing it.
So if we hear the Word we must also be doers of the Word. Obedience is proof that we believe. Proof of our faith. That is why James teaches to show your faith by your works. And if you still dont believe that works is unnecessary for salvation, you can read the following parable Jesus taught.
Matthew 21:28 “But what do you think about this? A man with two sons told the older boy, ‘Son, go out and work in the vineyard today.’ 29 The son answered, ‘No, I won’t go,’ but later he changed his mind and went anyway. 30 Then the father told the other son, ‘You go,’ and he said, ‘Yes, sir, I will.’ But he didn’t go.
31 “Which of the two obeyed his father?”
They replied, “The first.”
Then Jesus explained his meaning: “I tell you the truth, corrupt tax collectors and prostitutes will get into the Kingdom of God before you do. 32 For John the Baptist came and showed you the right way to live, but you didn’t believe him, while tax collectors and prostitutes did. And even when you saw this happening, you refused to believe him and repent of your sins.