Ezra 4:20

20 Jerusalem has had mighty kings who ruled over the whole province Beyond the River, to whom tribute, custom, and toll were paid.

Ezra 4:20 Meaning and Commentary

Ezra 4:20

There have been mighty kings also over Jerusalem, which have
ruled over all countries beyond the river
As David and Solomon; and the account of these they had in their records, see ( 2 Samuel 8:1 ) ( 1 Kings 4:21 1 Kings 4:24 )

and toll, tribute, and custom, was paid unto them;
as appears from the places referred to; and this served to strengthen the insinuation made to the king, that if these people were suffered to go on building, he would lose his tribute and taxes in those parts.

Ezra 4:20 In-Context

18 the letter that you sent to us has been read in translation before me.

19 So I made a decree, and someone searched and discovered that this city has risen against kings from long ago, and that rebellion and sedition have been made in it.

20 Jerusalem has had mighty kings who ruled over the whole province Beyond the River, to whom tribute, custom, and toll were paid.

21 Therefore issue an order that these people be made to cease, and that this city not be rebuilt, until I make a decree.

22 Moreover, take care not to be slack in this matter; why should damage grow to the hurt of the king?"