what the Bible says about pleasing God

So whether we are at home or away, we make it our aim to please him. For we must all appear before the judgment seat of Christ, so that each one may receive what is due for what he has done in the body, whether good or evil.
2 Corinthians 5:9-10

An idea that I have encountered over the years is that believers in Christ cannot do anything to please or displease God, because they are in Christ, and they have been justified (declared righteous) by faith in Christ, and only by faith in Christ.

Taking this further, fellow Christians have told me that they will not have to stand in judgment before God someday, and they will not have to give an account to him for all they have done with their lives.

While it’s true that believers do not need to fear that final judgment since our ultimate standing before God has been determined in Christ, we should be concerned with, and even fear, God’s displeasure of our disobedience of his commands. Conversely, it should be our desire to please God who is our heavenly father, and who has saved us by his grace.

Colossians 1:9-10
Hebrews 11:5-6
Hebrews 12:3-11