Yes we can

. We can answer this in 2 ways:
First wayFirst, salvation is not merely regeneration. It encompasses our entire Christian life from regeneration to glorification.
According to the Scriptures, there are three aspects of justification. We can cover 2 for this post. The first aspect is before God, which we obtained when we believe. In other words, once we are saved, we are justified, or we may say that once we are justified, we are saved, since God’s salvation includes justification. A justified person is a saved person (Rom 3:24, Gal. 2:16; Rom. 3:20 etc).
Second aspect of justification, the Bible shows that the second aspect of justification is before men - after salvation. We obtain this gradually after we are saved.
1. “A man is justified by works” (James 2:24).
When we were saved, the justification we obtained before God was by faith and had nothing to do with works. But after we are saved, our justification before men is by works, not by faith. Faith caused us to be justified by God at the time of our salvation; works cause us to be justified by men after our salvation.
2. “Let your light shine before men, so that they may see your good works” (Matt. 5:16).
3. “We exercise foresight for what is honorable not only in the sight of the Lord but also in the sight of men” (2 Cor. 8:21).
We should exercise foresight for what is honorable in the sight of men in order to match our justified status. Otherwise, even though we may be justified before God, we will not appear to be justified before men.
4. “He who serves Christ in this is well pleasing to God and approved by men” (Rom. 14:18).
Second wayNot so recent Finnish scholarship on Luther's writing -> Christ is present in faith.
Justification by faith is not merely forensic but involving a union of the divine life. It is not something that we are convinced of in our mind; it is something that we receive when we are joined to the Lord as one spirit (1 Cor. 6:17). When the living Christ indwells us, His faith becomes our faith. We believe because He is faithful, and He cannot deny Himself in us (2 Tim. 2:13). In our organic union with Him, His faith becomes our faith, and our faith is His faith.
The Christ who is preached to us is infused into us through the word of the gospel. Rather it is the apprehended reality of what is preached; Faith comes from hearing the word of Christ, and this word is not simply about Christ but that which bears Christ into us.
The ability to believe that is infused into us (work) is actually Christ as our faith.This faith is the faith of Jesus Christ in us,
which has become the faith by which we believe in Him, as in Rom 3:22, 26; Gal. 2:16, 20; 3:22; Eph. 3:12; and Phil. 3:9. This can only be understood in the union of Christ as faith. It is He who justifies but the abitily to believe out of free will is an operation of his Person as faith infused into us. And tis is faith is in us that God justifies us.
It is a mystery. The twofoldness can only be experienced in the mysterious union with Christ in the Spirit.
Part 1 is just a great write up.
Faith demands Action/works. That is the Jewish way. Its not NATO. They walk the talk(Faith) in life.
Part 2 sounds dodgy in that it looks new age. Although Paul uses the union of Christ and the church as the great mystery, its not the infusion of Christ in us, but rather its the allusion of the union of a man and woman in marriage covenant as one or echad.
Its also the eschatological aspect of the ancient Jewish marriage procedure which is specially highlighted in Jesus and the church in the future.
Luther's Sola Fide is a pure human reaction to the heresies of the RCC, nothing scriptural.