John Wesley on Joshua 24:2

The people - To the elders, by whom it was to be imparted to all the rest, and to as many of the people as came thither. He spake to them in God's name, and as from him, in the language of a prophet, Thus saith the Lord. Jehovah, the great God, and the God of Israel, whom you are peculiarly engaged to hear. The flood - Or, the river, namely, Euphrates, so called by way of eminency. They served - That is, Both Abraham and Nahor were no less idolaters than the rest of mankind. This is said to prevent their vain boasting in their worthy ancestors, and to assure them that whatsoever good was in, or had been done by their progenitors, was wholly from God's free grace, and not for their own merit or righteousness.