God clearly does not tolerate idols (Exodus 20:3-4).

Often idolatry is associated to people bowing to physical statues. However, even if you only praise an idol, it is considered a transgression and offence to God:

Then his mind changes, and he transgresses; He commits offense, ascribing this power to his god. -- Habakkuk 1:11 (NKJV)

For example:

They drank wine, and praised the gods of gold and silver, bronze and iron, wood and stone.

In the same hour the fingers of a man’s hand appeared and wrote opposite the lampstand on the plaster of the wall of the king’s palace; and the king saw the part of the hand that wrote. Then the king’s countenance changed, and his thoughts troubled him, so that the joints of his hips were loosened and his knees knocked against each other.

...

That very night Belshazzar, king of the Chaldeans, was slain.

-- Daniel 5:4-5,30 (NKJV)

Paul explain:

Put to death therefore what is earthly in you: sexual immorality, impurity, passion, evil desire, and covetousness, which is idolatry. -- Colossians 3:5 (ESV) which also relates to Ephesians 5:5

Idolatry is caused by any form of greed, whether sexual lust, or a desire for money, fame or pleasure.

Idolaters reason that God is not providing enough for their needs, therefore they seek a better 'god' (idol). When they start serving this idol, the idol does not fulfil their desires, therefore they need to sacrifice even more to get more. It is a vicious circle that reinforce itself. Greed results in idolatry and idolatry reinforces greed or lust again.

Claiming to be wise, they became fools, and exchanged the glory of the immortal God for images resembling mortal man and birds and animals and creeping things.

Therefore God gave them up in the lusts of their hearts to impurity, to the dishonoring of their bodies among themselves, because they exchanged the truth about God for a lie and worshiped and served the creature rather than the Creator, Who is blessed forever! Amen.

For this reason God gave them up to dishonorable passions. For their women exchanged natural relations for those that are contrary to nature; and the men likewise gave up natural relations with women and were consumed with passion for one another, men committing shameless acts with men and receiving in themselves the due penalty for their error. And since they did not see fit to acknowledge God, God gave them up to a debased mind to do what ought not to be done. They were filled with all manner of unrighteousness, evil, covetousness, malice. They are full of envy, murder, strife, deceit, maliciousness. They are gossips, slanderers, haters of God, insolent, haughty, boastful, inventors of evil, disobedient to parents, foolish, faithless, heartless, ruthless. Though they know God’s righteous decree that those who practice such things deserve to die, they not only do them but give approval to those who practice them.

-- Romans 1:22-32 (ESV)

Idols

Idols may include:

• physical idols (Exodus 20:3-5, Ezekiel 18:6)
• important people (Psalm 1:1; Psalm 146:3)
• pleasure (Ecclesiastes 2:1-11, Proverbs 21:17; 1 John 2:15-17; Philippians 3:19)
• money (Matthew 6:24; Luke 12:15-21; 1 Timothy 6:9-10)
• sex (Colossians 3:5)

Consequence

Besides the above-mentioned lust and greed, it is also written:

“Those who regard worthless idols forsake their own Mercy.

But I will sacrifice to you with the voice of thanksgiving; I will pay what I have vowed.

Salvation is of the Lord.”

-- Jonah 2:8-9

Solution

There's only one way that Israel's sin and guilt can be completely forgiven: They must crush the stones of every pagan altar and place of worship. -- Isaiah 27:9 (CEV)

In fact, the Israelites were not even allowed to mention the names of idols:

“Pay attention to all that I have said to you, and make no mention of the names of other gods, nor let it be heard on your lips. -- Exodus 23:13 (ESV)

Trusting God instead

Instead, you should put your trust (faith) in the LORD:

Fret not yourself because of evildoers; be not envious of wrongdoers! For they will soon fade like the grass and wither like the green herb.

• Trust in the LORD, and do good; dwell in the land and befriend faithfulness.
• Delight yourself in the LORD, and he will give you the desires of your heart.
• Commit your way to the LORD; trust in him, and he will act.

He will bring forth your righteousness as the light, and your justice as the noonday.

-- Psalm 37:1-6 (ESV)

King David's son confirm this:

Trust in the LORD with all your heart, and do not lean on your own understanding.
In all your ways acknowledge him, and he will make straight your paths.
Be not wise in your own eyes; fear the LORD, and turn away from evil.
It will be healing to your flesh and refreshment to your bones.

-- Proverbs 3:5-8 (ESV)

There are dozens more scriptures that highlight the importance to trust in God instead of idols.