I’ve touched on this subject more than once. Paul tells Christians that they can and should keep the law by loving one another. His condemnation of boasting is not necessarily aimed at the claim to have kept the law. When the Bible speaks of “keeping the law” it refers to something that sinners are able to do, by the Spirit, despite their inherent sinfulness.
So in this post, I want to add one more point about Romans 2.13. When Paul writes, “For it is not the hearers of the law who are righteous before God, but the doers of the law who will be justified.” This is obviously no contradiction of justification by faith alone.