Deuteronomy 27:4

Therefore it shall be when you have gone over Jordan, you shall set up these stones which I command you today, in Mount Ebal. And you shall plaster them with plaster.

Deuteronomy 11:29-30

And it will be, when Jehovah your God has brought you into the land where you go to possess it, you shall set the blessing upon Mount Gerizim, and the curse upon Mount Ebal.

Joshua 8:30-33

Then Joshua built an altar to Jehovah, 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 it will be, when Jehovah your God has brought you into the land where you go to possess it, you shall set the blessing upon Mount Gerizim, and the curse upon Mount Ebal.
Joshua 8:30
Then Joshua built an altar to Jehovah, the God of Israel in Mount Ebal,