Actually this is true almost irrespective of your point of view, but especially from a Scriptural point of view.

Israel behaved very badly in the wilderness.

When they worshiped the golden calf, God said,

“Yahweh spoke to Moses, “Go, get down; for your people, who you brought up out of the land of Egypt, have corrupted themselves!””
Ex 32:7

Moses reminded them.

“Remember, don’t forget, how you provoked Yahweh your God to wrath in the wilderness: from the day that you went forth out of the land of Egypt, until you came to this place, you have been rebellious against Yahweh.”
Deut 9:7

Then Moses summarized their conduct in the following verses, and followed up by saying,

“You have been rebellious against Yahweh from the day that I knew you.”
Deut 9:24

Moses says the Jews were unfaithful in his day.

Moses grand summary of the Jews and their position with respect to God is given in Deuteronomy chapter 32. Then Moses, speaking by the Holy Spirit of God, says of Israel after the flesh,

“They have dealt corruptly with him, they are not his children, it is their blemish;
They are a perverse and crooked generation.”
Deut 32:5

Moses asks Israel, are they paying God back? What for?

“Do you thus requite Yahweh,
Foolish people and unwise?
Isn’t he your father who has bought you?
He has made you, and established you.”
Deut 32:5

The psalmist Asaph pleaded with physical Israel in the days of King David,

“And might not be as their fathers,
A stubborn and rebellious generation,
A generation that didn’t make their hearts loyal,
Whose spirit was not steadfast with God.”
Psa 78.8

And Moses says the Jews will be worse later.

“For I know your rebellion, and your stiff neck: behold, while I am yet alive with you this day, you have been rebellious against Yahweh; and how much more after my death?”
Deut 31:26

Moses goes on to say,

“They sacrificed to demons, which were no God,
To gods that they didn’t know,
To new gods that came up of late,
Which your fathers didn’t dread.”
Deut 32:17

“32 For their vine is of the vine of Sodom,
Of the fields of Gomorrah:
Their grapes are grapes of gall,
Their clusters are bitter:
33 Their wine is the poison of serpents,
The cruel venom of asps.”
Deut 32:32-33

And Moses Prophesied of the Jews of later times.

“For I know that after my death you will utterly corrupt yourselves, and turn aside from the way which I have commanded you; and evil will happen to you in the latter days; because you will do that which is evil in the sight of Yahweh, to provoke him to anger through the work of your hands.”
Deut 31:29

And that is what has happened, even to this very day.

The details of the major twists and turns the Jews have made down through history are detailed in the upcoming book Jewish Chronicles.

And first step to repentance is facing your past.

Scriptures are from the World English Bible WEB, a copyright free revision
of the original ASV American Standard Version 1901.