Do not remove the ancient landmark.  (Proverbs 23:10)
Here the Holy Spirit reminds Yahweh’s people to not harden their hearts as our fore fathers did in the rebellion on the day of testing in the wilderness.  They saw Yahweh’s work for forty years.  In their refusing to obey Yahweh’s voice in the wilderness, they angered Him.  They reasoned wrongly in their hearts (minds) to justify defying Yahweh’s laws (Ten Commandments) given to them.  They always managed to go off course in their hearts and did not have knowledge of Yahweh’s ways (or nature).  They did not become progressively better and more intimately acquainted with them (Yahweh’s ways or nature of love)–Hebrews 3 Amplified Bible.
Hebrews 3 is one place out of two that I am aware of where the Holy Spirit of Yahweh directly speaks to us.  We ought to pause and reflect on the Holy Spirit’s words to us below:
HEBREWS 3:7     ¶ Wherefore (as the Holy Ghost saith,)
To day if ye will hear his voice,
8     Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:
9     When your fathers tempted me, proved me, and saw my works forty years.
10     Wherefore I was grieved with that generation, and said, They do alway err in their heart; and they have not known my ways.
11     So I sware in my wrath, They shall not enter into my rest.)
You ought to reread the words (voice) of the Holy Spirit.
If you do not obey Yahweh’s voice, you will not enter the kingdom of Yahweh–that simple.
When did people ever hear the voice of God?
In the wilderness God spoke to the people down the mountain thundering the words of the Ten Commandments that He wrote with His finger twice on tablets of stonefor Moses to take back to the people (see Exodus 20).  He, also, spoke and put fear in them so they would never forget His voice and words!
Did the people listen to God’s voice in the day of rebellion?
Do we listen to God’s voice today in the day of rebellion?
No the people of God did not listen to God even when they heard His voice coming down the mountain with their very ears!
Will you DOUBT God’s words and rebel too?
Will you listen and obey God’s Ten Commandments that he spoke down the mountain with His voice?  
Dead Sea Scroll
One of the Dead Sea Scrolls dated to the first century BC. This second sheet contains Deuteronomy 5:5-6:1. Thus preserves one of the oldest surviving copies of the Ten Commandments.
Will you refuse to regard His voice through His words?
This is the warning the Holy Spirit poses today hoping we will act wisely and not succumb to sin and fail like the Israelites that fell in the desert.
The adults all died in the wilderness and did not enter the promise land–except for Joshua and Caleb that both heard and obeyed God’s voice.
Do you believe what God and the Holy Spirit is saying via God’s words in the Bible today?
Focus on what God says and do not let anything else distract you from the voice of God.
[Remember Eve and Adam failed because they did not listen to the voice of God! Adam and Eve was removed from the presence of God in the Garden of Eden because they rebelled against God’s voice–His Command.  They wanted to do things their own way.  They wanted liberty from God in an attempt to become like God.  They were already like God made in His image and likeness.
As a result of their disobedience, they could not remain in God’s presence and rest in the Garden of Eden (Heaven).  Adam and Eve like the prodigal son, left the kingdom for the wilderness to discover they wanted to return back home with the King or God.  They became subject or slaves to sin and Satan in a inhospitable region because they did not listen to the voice of their Creator or King attempting to protect them from sin.  They were deceived into failing and missing out on their riches provided freely by God their King.  Now they had to work hard to provide for themselves and be slaves to Satan and sin rather than to righteousness and God their King.
I digressed here so let’s return to the topic of the Israelites in the wilderness hearing the voice of God.]
18     And to whom sware he that they should not enter into his rest, but to them that believed not?
19     So we see that they could not enter in because of unbelief.
1     ¶Let us therefore fear, lest, (a promise being left us) of entering into his rest,
any of you should seem to come short of it.
2     For unto us (was the gospel preached,) as well as unto them:

but the word preached did not profit them, (not being mixed with faith) in them that heard it.
3     For we which have believed do enter into rest,) as he said,


As I have sworn in my wrath, if they shall enter into my rest:
although the works were finished from the foundation of the world.
4     For he spake in a certain place of the seventh day on this wise,
And God did rest the seventh day (from all his works.)
5     And in this place again, If they shall enter into my rest.
6     Seeing therefore it remaineth that some must enter therein,
and they to whom it was first preached entered not (in because of         unbelief:) [SEE VERSE 2]


7     Again, he limiteth a certain day, saying in David, To day, after so long a time; as it is said,
To day if ye will hear his voice, harden not your hearts. [SEE HEBREWS 3:7]

8     For if  Jesus had given them rest, then would he not afterward have spoken of another day.

9     There remaineth therefore a rest to the people of God.

10     For he that is entered into his rest, (he also hath ceased from his own works,) as God did from his.

11     Let us labour therefore to enter into that restlest any man fall (after the same example of unbelief.)
12     For the word of God (is quick, and powerful, and sharper than any two edged sword,)
piercing even to the dividing asunder of soul and spirit, and of the joints and marrow,
and is a discerner of the thoughts and intents of the heart.
2 JOHN 1
4     I rejoiced greatly that I found of thy children walking in truth, (as we have received a commandment from the Father.)
5     ¶ And now I beseech thee, lady (THE CHURCH,) not as though I wrote a new commandment unto thee,
but that which we had from the beginning, that we love one another.


6    And this is love, that we walk after his commandments.
This is the commandment, That, as ye have heard from the beginning,

ye should walk in it.



9     Whosoever transgresseth, (and abideth not in the doctrine of Christ,) hath
not God.
He that abideth in the doctrine of Christ, he hath both the Father and the Son.
10     ¶ If there come any unto you,  (and bring not this doctrine,) receive him not
into your houseneither bid him God speed:
11     For he that biddeth him God speed is partaker (of his evil deeds.)
I pray Holy Father that all who read your words understand what the Holy Spirit is speaking into their hearts.  May those that love you and seek your face discern and understand the calling that you have placed upon their lives.  May they come to know you the true and Living God.  May they learn to heed and obey your voice.  They will not go or heed another.  They will only respond to your voice and your voice alone Dear God. Peace to the children of Yahweh.  May God’s blessing be upon you the reader.  Amen.