In the Chapters 1 – 4 of Ezekiel it is the thirtieth year and the prophet Ezekiel is in the midst of the exiles that are occupying the land of the Chaldeans by the river Chebar when the Lord appears to Ezekiel and makes him a sentinel for the house of Israel.
In Chapter 1, Ezekiel envisions a stormy wind with fire flashing continually. Soon after this supernatural event, four mythical figures appear and are perhaps cherubim, which were described as having wings with the upper body of a human being and the lower body of a lion or bull. After describing the viewing of the four figures, Ezekiel explains how the Lord appeared to him. Chapter 2 goes on to describe how the Lord God told Ezekiel that he was sending him to the people of Israel, "a nation of rebels who have rebelled against me"(2:3). He tells Ezekiel that he should not rebel against him like past Israelites and their ancestors and proceeds to give Ezekiel a written scroll with lamentations, mourning, and woe written on the front and back.
In Chapter 3 Ezekiel eats the scroll and God sends him to go speak to the house of Israel. The Lord emphasizes that the people of Israel will adamantly dismiss him because the house of Israel has a "hard forehead and a stubborn heart"(3:7). The Lord reassures Ezekiel that everything will be okay and that he shouldn't be afraid saying "I have made your face hard against their faces and your forehead hard against their foreheads" (3:8). In 3:12 Ezekiel explains how afterwards he went to the exiles at Tel-abib, who lived by the river Chebar and how he sat stunned among them for seven days. At the end of those seven days, the Lord comes to Ezekiel and tells him that he has made hi a sentinel, or a watcher who provides warnings, for the house of Israel. The Lord goes on to tell Ezekiel about huge responsibility and great duty to go to the Israelites
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