Here's why: two of the biggest prophecies in the OT concern the revelation to the Gentiles, and the Completion of the Written Revelation of God.
Qoraalku waa waxyaabaha ugu ba'an ee Ilaahay dadka weydiin doono sidaas darteed, waa mindi laba af leh oo dhinac xun iyo dhinac wanaagsanba loo adeegsan karo markaa ka digtoonow waxaa aad qoraysid.