Those who call themselves Christians are not necessarily the same as those who are of the Election of Grace Rom. 11:5.
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Not in Romans 11:5 they are not. But then again. Your entire notion of election is off.
Election is simply the issue of service; the service of witness.
Isaiah 41:
8. But thou, Israel, art my servant, Jacob whom I have chosen, the seed of Abraham my friend.
9. Thou whom I have taken from the ends of the earth, and called thee from the chief men thereof, and said unto thee, Thou art my servant; I have chosen thee, and not cast thee away.
Isaiah 43:
9. Let all the nations be gathered together, and let the people be assembled: who among them can declare this, and shew us former things? let them bring forth their witnesses, that they may be
justified: or let them hear, and say, It is truth.
10. Ye are my witnesses, saith the LORD, and my servant whom I have chosen: that ye may know and believe me, and understand that I am he: before me there was no God formed, neither
shall there be after me.
11. I, even I, am the LORD; and beside me there is no saviour.
Note the same in the following - they were already walking in the Lord; their "chosen" or "election" - unto service -
after the fact:
Acts 1:
21.
Wherefore of these men which have companied with us all the time that the Lord Jesus went in and out among us,
22.
Beginning from the baptism of John, unto that same day that he was taken up from us, must one be ordained to be a witness with us of his resurrection.
23. And they appointed two, Joseph called Barsabas, who was surnamed Justus, and Matthias.
24. And they prayed, and said, Thou, Lord, which knowest the hearts of all men,
shew whether of these two thou hast chosen,
25.
That he may take part of this ministry and apostleship, from which Judas by transgression fell, that he might go to his own place.
26. And they gave forth their lots; and the lot fell upon Matthias; and
he was numbered with the eleven apostles.
Romans 9:
4. Who are Israelites; to whom pertaineth the adoption, and the glory, and the covenants, and the giving of the law,
and the service of God,[/B] and the promises;
5. Whose are the fathers, and of whom as concerning the flesh Christ came, who is over all, God blessed for ever. Amen.