Deuteronomy 27:6

4 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.

5 And there shalt thou build an altar unto the LORD thy God, an altar of stones: thou shalt not lift up any iron tool upon them.

Thou shalt build the altar of the LORD thy God of whole stones: and thou shalt offer burnt offerings thereon unto the LORD thy God:

7 And thou shalt offer peace offerings, and shalt eat there, and rejoice before the LORD thy God.

8 And thou shalt write upon the stones all the words of this law very plainly.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
You shall build the altar of the LORD your God with uncut stones and offer upon it burnt offerings to the LORD your God.
KJV
Thou shalt build the altar of the LORD thy God of whole stones: and thou shalt offer burnt offerings thereon unto the LORD thy God:
WEB
You shall build the LORD your God’s altar of uncut stones. You shall offer burnt offerings on it to the LORD your God.
ASV
Thou shalt build the altar of Jehovah thy God of unhewn stones; and thou shalt offer burnt-offerings thereon unto Jehovah thy God:
DARBY
of whole stones shalt thou build the altar of Jehovah thy God; and thou shalt offer up burnt-offerings thereon to Jehovah thy God.
BLB
With uncut stones you shall build the altar of YHWH your God, and offer on it burnt offerings to YHWH your God.
ÅB
Av hele steiner skal du bygge Herrens, din Guds alter, og du skal ofre Herren din Gud brennoffer på det.
OTB
Bygg alteret for Herren deres Gud med uhugde steiner og ofre brennoffer på det til Herren deres Gud.
B1930
Av hele stener skal du bygge Herrens, din Guds alter, og du skal ofre Herren din Gud brennoffer på det.

Study notes (Tyndale)

Original text and word study

Cross references