'Opportunity' in the Bible

Therefore, since the promise remains for some to enter His rest, and those who formerly had the good news preached to them failed to [grasp it and did not] enter because of [their unbelief evidenced by] disobedience,

He again sets a definite day, [a new] “Today,” [providing another opportunity to enter that rest by] saying through David after so long a time, just as has been said before [in the words already quoted],“Today if you hear His voice,Do not harden your hearts.”

For if that first covenant had been faultless, there would have been no occasion for a second one.

And truly, if they had been mindful of that country from whence they came out, they might have had opportunity to have returned.

For you know that later, when he wanted to inherit the blessing, he was rejected because he didn’t find any opportunity for repentance, though he sought it with tears.