Hebrews 3:7-10, 16-19

Therefore, just as the Holy Spirit says, “TODAY IF YOU HEAR HIS VOICE, DO NOT HARDEN YOUR HEARTS AS WHEN THEY PROVOKED ME, AS IN THE DAY OF TRIAL IN THE WILDERNESS, WHERE YOUR FATHERS TRIED Me BY TESTING Me, AND SAW MY WORKS FOR FORTY YEARS. THEREFORE I WAS ANGRY WITH THIS GENERATION, AND SAID, ‘THEY ALWAYS GO ASTRAY IN THEIR HEART, AND THEY DID NOT KNOW MY WAYS’

For who provoked Him when they had heard? Indeed, did not all those who came out of Egypt led by Moses? And with whom was He angry for forty years? Was it not with those who sinned, whose bodies fell in the wilderness? And to whom did He swear that they would not enter His rest, but to those who were disobedient? So we see that they were not able to enter because of unbelief.