Just a few citations from the second reading. A consistent refrain that we often have problems hearing. Oh, and another example of Paul raging against autolaborological fundamentalism.

Philippians 3:4b-14

Yet whatever gains I had, these I have come to regard as loss because of Christ. More than that, I regard everything as loss because of the surpassing value of knowing Christ Jesus my Lord. For his sake I have suffered the loss of all things, and I regard them as rubbish, in order that I may gain Christ and be found in him, not having a righteousness of my own that comes from the law, but one that comes through faith in Christ, the righteousness from God based on faith.
— Philippians 3:7-9

Verses 7 thru 9 are cited in Formula of Concord, Solid Declaration, Article 5: Law and Gospel (FC, SD 5.37) to show that the problem with good works is not the works themselves, but the "false trust that is placed in such works." See! Autolaborological fundamentalism! This false trust is idolatry.

Verse 9 by itself is cited in Formula of Concord, Solid Declaration, Article 3: Righteousness (FC, SD 3.17), as proof to show that justification is reckoned by God to faith.

TheoThru

Again, the question comes down to who we trust. Paul's consistent refrain that is picked up by the reformers calls us to not look to ourselves or our actions to make us righteous.

How do we proclaim faith that moves us to acts of love without leading people to think that the acts of love are salvific?
Are we willing to give up our assumption of control and pour it out as an offering to Jesus?