"Oh that the salvation of Israel were come out of Zion! When God bringeth back the captivity of his people, Jacob shall rejoice, and Israel shall be glad." (Psalms 53:6) This Old Testament verse says that God came to the earth--as Jesus Christ--to save Israel.
The Greek word translated as "world" in John 3:16--"For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life"--is "kosmon." Which is a form of the word "kosmos." This word, in the context of the Bible, means this: the ordering or configuration of believers, who are of (scattered) Israel and also of the remnant of Judah who never lost their identity.
You might have guessed that "kosmos" is where we get the English "cosmos." Now cosmos means the stars in the heaven above. Thus kosmos must mean the stars (angels, sons of God, annunaki (in the Sumerian)) that fell.
Ephesians 1:4 says, "...According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love..." "Kataboles kosmou" are the Greek words that the King James translators translated as "the foundation of the world." The ancient Greeks (Achaian, Dorian, Ionians and Aeolians) were part of the kosmos. And so were the other scattered Israelites (of Europe). So the kosmos are the elect--are Israel.
Katabole means: a throwing down or a falling down. In the previous age of the earth--when Lucifer led a third of the elect angels in rebellion against the most High--these who are of the kosmos or Israel were the elect angels. And some if not all of them were those one third who were deceived by the Devil into joining in his rebellion against YHVH Elohim.