Ezekiel ministered to the Jews in exile. He probably wrote this book for the benefit of the exiles and the other Jewish communities of his day and beyond his day. In some of his visions (e.g. chs. 8 and 11) the Lord carried the prophet to Jerusalem in his spirit, but his messages were not exclusively for the Jews in Jerusalem.
"Ezekiel ministered to all twelve tribes and his purpose was twofold: (1) to remind them of the sins which had brought judgment and exile upon them; (2) to encourage and strengthen their faith by prophecies of future restoration and glory."12
The Jews were in exile because they had proved unfaithful to the Mosaic Covenant that their God had made with them. That covenant had warned the Israelites that if they proved unfaithful they could expect the divine discipline of their sovereign Lord who might even drive them from the land He had given them (Lev. 26; Deut. 28). The covenant also promised restoration to the land eventually. God would not cast His people off permanently no matter how far they departed from Him and His will.
". . . his aim is to convince the people of their utter unworthiness of any consideration from God, in order to shame them into true repentance."13
Ezekiel reminded the exiles of their covenant unfaithfulness and of the faithfulness, holiness, and glory of Yahweh, their God. The Lord would judge, cleanse, and ultimately bless His people so that they and all people might come to appreciate His uniqueness and greatness. The purpose of the Exile was to turn God's people away from their sins and back to their Sovereign. The discipline they experienced was an evidence of God's love. When it was over a glorious future lay in store for them. A righteous ruler would eventually lead them back to a radically renovated land where they would enjoy peace, prosperity, and renewed worship.
"Ezekiel, as a watchman for Israel, warned her of the judgment that was imminent and stressed the need for individual responsibility as well as national accountability before God. Each Israelite was personally to turn to the Lord. Likewise, the whole nation must ultimately return to him."14
The first part of Ezekiel's ministry consisted of predicting the fall of Jerusalem from Babylon (chs. 1-24). When it fell in 586 B.C., he then began predicting God's judgment on the Gentile nations (chs. 25-32) and the restoration of Israel (chs. 33-48).
"The author's purpose throughout the entire prophecy was to keep before the exiles the sins of the nation which were the grounds for her punishment, and to sustain and encourage the faithful remnant concerning future restoration and blessing (cf. 14:21-23)."15