Lessons from Numbers 14
In Numbers 14, the people of Israel refuse to go into Canaan, rebelling against the LORD, distrusting his care for them.
Hebrews 3:15b-16
“Today, if you hear his voice, do not harden your hearts as in the rebellion.” For who were those who heard and yet rebelled? Was it not all those who left Egypt led by Moses?
God responded by pronouncing judgment on them, that they should wander 40 years and die in the wilderness rather than enter the promised land:
Numbers 14:32-34
But as for you, your dead bodies shall fall in this wilderness. And your children shall be shepherds in the wilderness forty years and shall suffer for your faithlessness, until the last of your dead bodies lies in the wilderness. According to the number of the days in which you spied out the land, forty days, a year for each day, you shall bear your iniquity forty years, and you shall know my displeasure.
Hebrews 3:17-18
And with whom was he provoked 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?
The people rebelled against God, disobeying him, because they did not believe him:
Numbers 14:11
And the LORD said to Moses, “How long will this people despise me? And how long will they not believe in me, in spite of all the signs that I have done among them?"
Hebrews 3:19
So we see that they were unable to enter because of unbelief.
We are to take warning from this, being wary lest we too gain an unbelieving heart that leads us away from God:
Hebrews 3:12
Take care, brothers, lest there be in any of you an evil, unbelieving heart, leading you to fall away from the living God.
In order to avoid falling away into unbelief, we are to exhort one another daily against sin and toward faith and holiness:
Hebrews 3:13
But exhort one another every day, as long as it is called “today,” that none of you may be hardened by the deceitfulness of sin.
And we are to learn from Israel's example, and strive to "enter God's rest," and strive that our brethren reach that rest also, and not fall away:
Hebrews 4:11
Let us therefore strive to enter that rest, so that no one may fall by the same sort of disobedience.
The next verse tells us that the Word of God is to be used as a sword to pierce the heart -- our own heart and those of our brethren -- that we might not be hardened by sin and fall away:
Hebrews 4:12-13
For the word of God is living and active, sharper than any two-edged sword, piercing to the division of soul and of spirit, of joints and of marrow, and discerning the thoughts and intentions of the heart. And no creature is hidden from his sight, but all are naked and exposed to the eyes of him to whom we must give account.
We are to "hold fast our confession," coming to God for help and mercy and grace through Jesus our high priest:
Hebrews 4:14-16
Since then we have a great high priest who has passed through the heavens, Jesus, the Son of God, let us hold fast our confession. For we do not have a high priest who is unable to sympathize with our weaknesses, but one who in every respect has been tempted as we are, yet without sin. Let us then with confidence draw near to the throne of grace, that we may receive mercy and find grace to help in time of need.
This is meant to be a warning to us, that without vigilance and striving and holding fast, our hearts are prone to be deceived by sin and to turn away from God, in unbelief that leads to disobedience. And this is such a great danger that we are not strong enough to keep ourselves safe from it, by ourselves; we require the exhortation of others and the Word of God, on a regular basis, to expose what is in our hearts. And we have been given Jesus the High Priest, by whom we can come to God for help on this difficult path to Heaven.
Therefore, you MUST be in regular fellowship in a church, the Body of Christ -- not just attending services, but in community and relationship with other individuals in that local church. Be taking in the Word of God consistently through preaching, private devotions, and the exhortation of others, because without it, you will not see where your own heart is deceived. And you must cling to Christ.