And they said one to another, Go to, let us make brick, and burn them thoroughly. And they had brick for stone, and slime had they for mortar.

Wesley's Notes

11:3 Go to, let us make brick, let us build us a city - The country being a plain, yielded neither stone nor morter, yet that did not discourage them, but they made brick to serve instead of stone, and slime, or pitch, instead of morter. Some think they intended hereby to secure themselves against the waters of another flood, but if they had, they would have chosen to build upon a mountain rather than upon a plain. But two things it seems they aimed at in building. To make them a name: they would do something to be talked of by posterity. But they could not gain this point; for we do not find in any history the name of so much as one of these Babel - builders. Philo Judeus saith they engraved every one his name upon a brick; yet neither did that serve their purpose. They did it to prevent their dispersion; lest we be scattered abroad upon the face of the earth - It was done (saith Josephus) in disobedience to that command, Gen 9:1, replenish the earth. God orders them to scatter. No, say they, we will live and die together. In order hereunto they engage themselves and one another in this vast undertaking. That they might unite in one glorious empire, they resolve to build this city and tower, to be the metropolis of their kingdom, and the center of their unity.

King James Translators' Notes

they said...: Heb. a man said to his neighbour

burn...: Heb. burn them to a burning

Jamieson-Fausset-Brown Bible Commentary

3. brick-There being no stone in that quarter, brick is, and was, the only material used for building, as appears in the mass of ruins which at the Birs Nimroud may have been the very town formed by those ancient rebels. Some of these are sun-dried-others burnt in the kiln and of different colors.

slime-bitumen, a mineral pitch, which, when hardened, forms a strong cement, commonly used in Assyria to this day, and forming the mortar found on the burnt brick remains of antiquity.

Matthew Henry's Concise Commentary

11:1-4 How soon men forget the most tremendous judgments, and go back to their former crimes! Though the desolations of the deluge were before their eyes, though they sprang from the stock of righteous Noah, yet even during his life-time, wickedness increases exceedingly. Nothing but the sanctifying grace of the Holy Spirit can remove the sinful lusts of the human will, and the depravity of the human heart. God's purpose was, that mankind should form many nations, and people all lands. In contempt of the Divine will, and against the counsel of Noah, the bulk of mankind united to build a city and a tower to prevent their separating. Idolatry was begun, and Babel became one of its chief seats. They made one another more daring and resolute. Let us learn to provoke one another to love and to good works, as sinners stir up and encourage one another to wicked works.