Verb · Second person imperative present of εἰμί (G1510)
Second person imperative present of G1510; be thou:—+ agree, be, X give thyself wholly to.
Outline
Breakdown
Joseph was told to go into Egypt because there was a heavy concentration of Israelites in Egypt (In Josephus's history, it is claimed that, after the first Ptolemy took Judea, he led some 120,000 Jewish captives to Egypt from the areas of Judea).
Strongs concordance