Keep away from the idols and evils

Numbers 33:37-56
After Kadesh, Israelites camped another 10 places.
Aaron died on the first day of the fifth month of the fortieth year after the Israelites came out of Egypt.
The Lord said to Moses, 'Speak to the Israelites and say to them: When you cross the Jordan into Canaan, drive out all the inhabitants of the land before you. Destroy all their carved images and their cast idols, and demolish all their high places.  But if you do not drive out the inhabitants of the land, those you allow to remain will become barbs in your eyes and thorns in your sides.'
The intention is to wipe out everything associated with idolatrous religions - the carved images and places of worship ('high places' where shrines神社 were built)
Why?
The inhabitants of Canaan were worshipping many idols, if Israelites do not drive them out, they will be affected by them turn away from the Lord.
Clean out living environment, make our heart purify is an important matter. Don't let our heart turn away from the Lord.
How?
Don't let any space for the sin stay in my heart and mind. Dear Lord please bless my heart keep focusing on you.