Deuteronomy 27:4

And when you have gone over Jordan, you are to put up these stones, as I have said to you today, in Mount Ebal, and have them coated with building-paste.

Deuteronomy 11:29-30

And when the Lord your God has taken you into the land of your heritage, you are to put the blessing on Mount Gerizim and the curse on Mount Ebal.

Joshua 8:30-33

Then Joshua put up an altar to the Lord, the God of Israel, in Mount Ebal,

Treasury of Scripture Knowledge

Summary

Therefore it shall be when ye be gone over Jordan, that ye shall set up these stones, which I command you this day, in mount Ebal, and thou shalt plaister them with plaister.

Bible References

In mount ebal

Deuteronomy 11:29
And when the Lord your God has taken you into the land of your heritage, you are to put the blessing on Mount Gerizim and the curse on Mount Ebal.
Joshua 8:30
Then Joshua put up an altar to the Lord, the God of Israel, in Mount Ebal,

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain