It's pretty obvious, Tam, that the Lord's enemies in the following are the physical seed of Abraham, but the spiritual seed of the Devil.
John 8:37 I know that ye are Abraham's seed; but ye seek to kill me, because my word hath no place in you. 8:38 I speak that which I have seen with my Father: and ye do that which ye have seen with your father. 8:39 They answered and said unto him, Abraham is our father. Jesus saith unto them, If ye were Abraham's children, ye would do the works of Abraham. 8:40 But now ye seek to kill me, a man that hath told you the truth, which I have heard of God: this did not Abraham. 8:41 Ye do the deeds of your father. Then said they to him, We be not born of fornication; we have one Father, even God. 8:42 Jesus said unto them, If God were your Father, ye would love me: for I proceeded forth and came from God; neither came I of myself, but he sent me. 8:43 Why do ye not understand my speech? even because ye cannot hear my word. 8:44 Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.
Spiritual in the sense of not physical.
He was telling them that they were of their father the Devil, spiritually.
Not physically, but spiritually.
In other words, in the Devil's same heart attitude (spirit) or mind, towards God, and the things of God. Thus, their behavior towards Him.
Rom. 5:6-8.
Abe's physical descendants that were faithful were considered to be his children, and his physical descendants that were not faithful were children of Satan.
No problem with that.
BUT ...... Abe also was the father of all the faithful folks that were NOT his physical descendants.
Some might say that's where the analogy sorta has a kink in it is that faithful folks that were NOT physical descendants of Abe were also considered as Abe's children.
So who were the faithful children that were NOT physical descendants of Eve, but would still be considered her seed because of their faith?