An altar is a platform where the spiritual realm connects to the physical realm.
Altars are where covenants are activated.
Now how do demonic altars start?
They can start through sin.
What kind of sin?
We see how Solomon built altars that were NOT from God.
7 Then Solomon built a high place for Chemosh the abomination of Moab, on the hill that is east of Jerusalem, and for Molech the abomination of the people of Ammon. 8 And he did likewise for all his foreign wives, who burned incense and sacrificed to their gods. (1 Kings 11:7-8)
Solomon turned his heart away from the Lord because of the influence from the foreign women and he followed their foreign gods.
This is just 1 example through scriptures.
When God gives a commandment, we MUST obey.
Here are a few ways to break demonic altars we form.
We must first recognize what we did to form these.
You can ask the Holy Spirit to reveal to you.
Pray this prayer in Ephesians.
8 the eyes of your understanding being enlightened; that you may know what is the hope of His calling, what are the riches of the glory of His inheritance in the saints, (Ephesians 1:8)
#2 Speak life
Our words have power, we have the authority to break these in Jesus name.
21 Death and life are in the power of the tongue,
And those who love it will eat its fruit. (Proverbs 18:21)
#3 Blood of Jesus
He was the perfect sacrifice.
11 And they overcame him by the blood of the Lamb and by the word of their testimony, and they did not love their lives to the death. (Revelation 12:11)
There is no demon, devil or wicked spirit that has power of the blood of Jesus.
TRUE repentance comes from a heart and mind willing to change.
10 Create in me a clean heart, O God,
And renew a steadfast spirit within me.
11 Do not cast me away from Your presence,
And do not take Your Holy Spirit from me.
12 Restore to me the joy of Your salvation,
And uphold me by Your generous Spirit.
13 Then I will teach transgressors Your ways,
And sinners shall be converted to You.
14 Deliver me from the guilt of bloodshed, O God,
The God of my salvation,
And my tongue shall sing aloud of Your righteousness. (Psalm 51:10-14)
God bless you!