Here's Martin Luther on how we can be misled and miss the Gospel.

The change we need is the change that has already happened to us who believe. My hope has changed. Where I was self-oriented, self-righteous, self-justifying, self-hoping, wanting to see myself be the hero, now I trust Jesus. I trust in his work, his blood, his death, his righteousness, his life for me. This is the change the Bible actually accounts to us.

So it always is: a low view of law always brings legalism in religion; a high view of law makes a man a seeker after grace.