Yes, and since the Spiritual seed's fathers are the physical seed of Abraham, Isaac and Jacob then that means that the Spiritual seed will also be the physical descendants of Abraham, Isaac and Jacob.
The physical and spiritual Seed is Christ Jesus. He is the promise according to Paul. He was an educated, Law studying Jewish man, who knew the Law and the Prophecies of the OT. He is the one who said it was Jesus as taught by Jesus Himself to Paul. The point of the promises to Israel was to be about Christ, who is the fulfillment of all things.
Gal 3
7 Know ye therefore that they which are of faith, the same are the children of Abraham. 8
And the scripture, foreseeing that God would justify the heathen through faith, preached before the gospel unto Abraham, saying,
In thee shall all nations be blessed. 9 So then they which be of faith are blessed with faithful Abraham.
12 And the law is not of faith: but, The man that doeth them shall live in them. 13 Christ hath redeemed us from the curse of the law, being made a curse for us: for it is written, Cursed is every one that hangeth on a tree: 14
that the blessing of Abraham might come on the Gentiles through Jesus Christ; that we might receive the promise of the Spirit through faith.
16 Now to Abraham and his seed were the promises made.
He saith not, And to seeds, as of many; but as of one, And to thy seed, which is Christ. 17 And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect. 18 For if the inheritance be of the law, it is no more of promise: but God gave it to Abraham by promise.
22 But the scripture hath concluded all under sin,
that the promise by faith of Jesus Christ might be given to them that believe.
26 For ye are all the children of God by faith in Christ Jesus. 27 For as many of you as have been baptized into Christ have put on Christ. 28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus. 29 And if ye be Christ’s, then are ye Abraham’s seed, and heirs according to the promise.
Heb 3
7 Wherefore (as the Holy Ghost saith, To day if ye will hear his voice, 8 harden not your hearts, as in the provocation, in the day of temptation in the wilderness: 9 when your fathers tempted me, proved me, and saw my works forty years. 10 Wherefore I was grieved with that generation, and said, They do alway err in their heart; and they have not known my ways. 11 So I sware in my wrath, They shall not enter into my rest.)
12 Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God. 13 But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin. 14 For we are made partakers of Christ, if we hold the beginning of our confidence stedfast unto the end; 15 while it is said, To day if ye will hear his voice, harden not your hearts, as in the provocation. 16 For some, when they had heard, did provoke: howbeit not all that came out of Egypt by Moses. 17 But with whom was he grieved forty years? was it not with them that had sinned, whose carcases fell in the wilderness? 18 And to whom sware he that they should not enter into his rest, but to them that believed not? 19 So we see that they could not enter in because of unbelief.
Heb 4
6 Seeing therefore it remaineth that some must enter therein, and they to whom it was first preached entered not in because of unbelief: 7 again, he limiteth a certain day, saying in David, To day, after so long a time; as it is said, To day if ye will hear his voice, harden not your hearts.
Heb 11
8 By faith Abraham, when he was called to go out into a place which he should after receive for an inheritance, obeyed; and he went out, not knowing whither he went. 9 By faith he sojourned in the land of promise, as in a strange country, dwelling in tabernacles with Isaac and Jacob, the heirs with him of the same promise: 10 for he looked for a city which hath foundations, whose builder and maker is God.
13 These all died in faith, not having received the promises, but having seen them afar off, and were persuaded of them, and embraced them, and confessed that they were strangers and pilgrims on the earth. 14 For they that say such things declare plainly that they seek a country. 15 And truly, if they had been mindful of that country from whence they came out, they might have had opportunity to have returned. 16 But now they desire a better country, that is, an heavenly: wherefore God is not ashamed to be called their God: for he hath prepared for them a city.
39 And these all, having obtained a good report through faith, received not the promise: 40 God having provided some better thing for us, that they without us should not be made perfect.
Heb 12
22 but ye are come unto mount Sion, and unto the city of the living God, the heavenly Jerusalem, and to an innumerable company of angels, 23 to the general assembly and church of the firstborn, which are written in heaven, and to God the Judge of all, and to the spirits of just men made perfect, 24 and to Jesus the mediator of the new covenant, and to the blood of sprinkling, that speaketh better things than that of Abel.
Heb 13
12 Wherefore Jesus also, that he might sanctify the people with his own blood, suffered without the gate. 13 Let us go forth therefore unto him without the camp, bearing his reproach. 14 For here have we no continuing city, but we seek one to come.
