What is the meaning of Mark 1:5?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

People went out to him from all of Jerusalem and the countryside of Judea. Confessing their sins, they were baptized by him in the Jordan River.

Berean Standard Bible (BSB)

All the country of Judea and all those of Jerusalem went out to him. They were baptized by him in the Jordan river, confessing their sins.

World English Bible (WEB)

And{G2532} there went out{G1607}{(G5711)} unto{G4314} him{G846} all{G3956} the land{G5561} of Judaea{G2449}, and{G2532} they of Jerusalem{G2415}, and{G2532} were{G907} all{G3956} baptized{G907}{(G5712)} of{G5259} him{G846} in{G1722} the river{G4215} of Jordan{G2446}, confessing{G1843}{(G5734)} their{G846} sins{G266}.

Strong's King James

All the district of Y'hudah (Judah) went to him and all the inhabitants of Yerushalayim (Jerusalem) were immersed by him in the Yarden (Jordan) river, confessing their deviations.

The F.O.G*

[5] People streamed out from Jerusalem and all across Judea, drawn by this compelling call. Standing in the Jordan River—the same waters their ancestors had crossed to enter the Promised Land—they acknowledged their brokenness before God and were baptized, hope rising with every plunge beneath the surface.

The F.O.G Paraphrase

and there were going forth to him all the region of Judea, and they of Jerusalem, and they were all baptized by him in the river Jordan, confessing their sins.

Young's Literal Translation