Charles Ellicott Commentary Joshua 9:9-10

"And they said unto him, From a very far country thy servants are come because of the name of Jehovah thy God: for we have heard the fame of him, and all that he did in Egypt, and all that he did to the two kings of the Amorites, that were beyond the Jordan, to Sihon king of Heshbon, and to Og king of Bashan, who was at Ashtaroth." — Joshua 9:9-10 (ASV)

All that he did in Egypt, and ... to the two kings of the Amorites. —The Gibeonites carefully abstain from referring to more recent exploits, as the passage of the Jordan, the taking of Jericho and Ai; they mention only those which might have had time to reach them in the “far country” from which they asserted that they came.