Ezra faces the challenge of staffing the Temple with qualified personnel. To solve this, he organizes a special delegation to locate and recruit men worthy of the holy service. He appoints messengers and directs them to a highly influential local leader named Iddo [רש״י, מצודת דוד, מלבי״ם, ביאור שטיינזלץ]. Iddo is a prominent figure stationed in Casiphia. The specific location given emphasizes that the messengers are sent to the city of Casiphia itself, rather than the broader surrounding region that shares the same name [מלבי״ם].
Knowing the importance of this mission, Ezra does not merely dispatch the delegation and hope for the best. He carefully prepares their arguments in advance, instructing them on the exact words they need to say. By scripting their appeal, he ensures their message will be complete and their mission successful [מצודת דוד, רלב״ג]. Ezra instructs his messengers to speak directly to Iddo and his brothers. While the primary approach among commentators is that the delegation addresses Iddo and his relatives [מצודת דוד, אבן עזרא, רלב״ג], an alternative view suggests that they are directed to a specific relative named Achi [אבן עזרא].
The delegation is also sent to engage a group known as the Nethinim. Opinions vary on the exact identity of this group. Some view them as the permanent, established residents of the area [רש״י], while others identify them as local officials appointed by the king [מלבי״ם]. A third perspective understands them to be the actual Temple servants who traditionally assisted in the holy work [מצודת דוד, רלב״ג, ביאור שטיינזלץ]. Ultimately, the goal of the entire mission is to ask Iddo and his associates to send Levites and additional servants back with the delegation. These men are needed to perform the holy work in the House of God, particularly to participate in the sacred singing of the Levites [מצודת דוד, רלב״ג, ביאור שטיינזלץ].