What does the Bible say about self-commendation?

In 2 Corinthians 10:17-18, Paul emphasizes that self-commendation is not how one gains God's approval. He explains that those who try to commend themselves to God based on their actions or virtues are mistaken. The reality is that God's approval comes only through His commendation, not through our efforts to justify ourselves. This self-commendation is seen in Matthew 7:22-23, where individuals boast of their works before God, yet He rejects them for their lack of true faith and reliance on His grace.