By faith [Moses] kept the Passover and sprinkled the blood, so that the Destroyer of the firstborn might not touch them. By faith the people crossed the Red Sea as on dry land, but the Egyptians, when they attempted to do the same, were drowned. By faith the walls of Jericho fell down after they had been encircled for seven days. By faith Rahab the prostitute did not perish with those who were disobedient, because she had given a friendly welcome to the spies. And what more shall I say? For time would fail me to tell of Gideon, Barak, Samson, Jephthah, of David and Samuel and the prophets— who through faith conquered kingdoms, enforced justice, obtained promises, stopped the mouths of lions, quenched the power of fire, escaped the edge of the sword, were made strong out of weakness, became mighty in war, put foreign armies to flight.

So tell me:  Did Moses believe? Did Rahab?  Did David?  What about the People of Israel crossing the Red Sea?

And yet.

Now Moses was faithful in all God’s house as a servant, to testify to the things that were to be spoken later, but Christ is faithful over God’s house as a son. And we are his house if indeed we hold fast our confidence and our boasting in our hope.

Therefore, as the Holy Spirit says,

“Today, if you hear his voice,
do not harden your hearts as in the rebellion,
on the day of testing in the wilderness,
where your fathers put me to the test
and saw my works for forty years.
Therefore I was provoked with that generation,
and said, ‘They always go astray in their heart;
they have not known my ways.’
As I swore in my wrath,
‘They shall not enter my rest.’”

Take care, brothers, lest there be in any of you an evil, unbelieving heart, leading you to fall away from the living God. 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. For we have come to share in Christ, if indeed we hold our original confidence firm to the end. As it is said,

“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? 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? So we see that they were unable to enter because of unbelief.

So there is the same generation that turned to unbelief.  They crossed the sea by faith and were turned away from the Promised Land by unbelief.  And we are warned directly by their example not to do the same?

And so we are warned to heed their example:

But recall the former days when, after you were enlightened, you endured a hard struggle with sufferings, sometimes being publicly exposed to reproach and affliction, and sometimes being partners with those so treated. For you had compassion on those in prison, and you joyfully accepted the plundering of your property, since you knew that you yourselves had a better possession and an abiding one. Therefore do not throw away your confidence, which has a great reward. For you have need of endurance, so that when you have done the will of God you may receive what is promised. For,

“Yet a little while,
and the coming one will come and will not delay;
but my righteous one shall live by faith,
and if he shrinks back,
my soul has no pleasure in him.”

But we are not of those who shrink back and are destroyed, but of those who have faith and preserve their souls.

And who gets destroyed?

For if we go on sinning deliberately after receiving the knowledge of the truth, there no longer remains a sacrifice for sins, but a fearful expectation of judgment, and a fury of fire that will consume the adversaries. Anyone who has set aside the law of Moses dies without mercy on the evidence of two or three witnesses. How much worse punishment, do you think, will be deserved by the one who has spurned the Son of God, and has profaned the blood of the covenant by which he was sanctified, and has outraged the Spirit of grace? For we know him who said, “Vengeance is mine; I will repay.” And again, “The Lord will judge his people.” It is a fearful thing to fall into the hands of the living God.

So what is systematic theology for?  Is it to come up with coherent generalizations that account for all the data?  Or was it invented to replace the Bible with a truncated textbook that purports to accurately summarize the Bible?

Messengers get attacked, but it is the sender who is the real Offender.