Hebrews 11:6 (BSB)

And without faith it is impossible to please God. For anyone who approaches Him must believe that He exists and that He rewards those who earnestly seek Him.

From Hebrews 11. Also in the ESV.

Commentary on Hebrews 11:6

• John Calvin (Reformed), Calvin's Commentaries on Hebrews 11:6: 6. But without faith, etc. What is said here belongs to all the examples which the Apostle records in this chapter; but as there is in the passage some measure of obscurity, it is necessary to examine its meaning more closely. But there is no better interpreter than the Apostle himself. The proof, then, which he immediately subjoins, may serve as an explanation.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Hebrews 11:4-31: The apostle, having given us a more general account of the grace of faith, now proceeds to set before us some illustrious examples of it in the Old Testament times, and these may be divided into two classes: - 1. Those whose names are mentioned, and the particular exercise and actings of whose faith are specified. 2.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Hebrews 11:6: By faith Noah, being warned of God,.... In the Greek text, Noah is called "Noe", and so the Septuagint interpreters of the Old Testament call him; but Josephus calls him "Noeos": or "having received an oracle from God"; in which he was admonished, how to make an ark, as Moses was, in like manner, how to make a tabernacle, Heb 8:5.
• Albert Barnes (Presbyterian), Barnes' New Testament Notes on Hebrews 11:6: Verse 6. But without faith it is impossible to please him. Without confidence in God--in his fidelity, his truth, his wisdom, his promises. And this is as true in other things as ill religion. It is impossible for a child to please his father unless he has confidence in him.