Romans 8:14 For as many as are led by the Spirit of God, they are the sons of God.
This is more than simply calling on the Lord. Pull out any gospel tract on how to get saved and they talk about being born again, there is no requirement to be led by the Spirit of God. Simply believe Jesus rose from the Dead and call Him Lord and you shall be saved.
Titus 3:7 That being justified by his grace, we should be made heirs according to the hope of eternal life.
Being justified is past tense, we should be made is future. We are justified by His grace before we are made heirs. All of these gospel tracts equate being justified from sin with salvation. That is true, you are saved from sin, but that does not mean you have been made an heir. You could never be made an heir if you were not justified, so that is the foundation, but it isn't the house.
Hebrews 1:2 Hath in these last days spoken unto us by his Son, whom he hath appointed heir of all things, by whom also he made the worlds;
To be "appointed heir" is equivalent to this concept of being adopted as God's sons. We are born of God, we are His children, but you have to be led by the Spirit to be appointed an heir of God
Hebrews 1:14 Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?
Who are they talking about? These are the believers and yet they are not yet "heirs".
Hebrews 11:7 By faith Noah, being warned of God of things not seen as yet, moved with fear, prepared an ark to the saving of his house; by the which he condemned the world, and became heir of the righteousness which is by faith.
We are saved by faith. Noah believed God and that was reckoned to Him as righteousness. However, it was what he did after that, the preparing of the ark and the preaching of the gospel to the world, condemning the world of sin, that caused him to become an heir. This is why James talks about being saved by the work of faith. To be justified by sin is immediate, as soon as you receive the work the Lord did on the cross. But becoming an heir, that is a result of a work of faith.[/Q
for the son of the bondwoman shall not be heir with the son of the freewoman.
Galatians 3:29 And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise.
Galatians gives us the contrast between Isaac and Ishmael. Isaac was an "heir according to the promise", Ishmael was not.
Romans 8:14 For as many as are led by the Spirit of God, they are the sons of God.
This is more than simply calling on the Lord. Pull out any gospel tract on how to get saved and they talk about being born again, there is no requirement to be led by the Spirit of God. Simply believe Jesus rose from the Dead and call Him Lord and you shall be saved.
Galatians 4:5 To redeem them that were under the law, that we might receive the adoption of sons.
Being redeemed is not the same thing as "receiving the adoption of sons". But it paves the way. This term adoption of sons is a reference to a wealthy landowner assigning a child as an heir to the family business. It was a legal document.
Galatians 4:7 Wherefore thou art no more a servant, but a son; and if a son, then an heir of God through Christ.
When the Jews were under the law they were like being a servant, just as Hagar was a servant. The child of a servant is not an heir, but a son is an heir.
Galatians 4:30 Nevertheless what saith the scripture? Cast out the bondwoman and her son: for the son of the bondwoman shall not be heir with the son of the freewoman.
The reason Hagar and Ishmael were "cast out" is because they were not heirs. Yes, Ishmael was Hagar's son, but not Abraham's. He was Abraham's child, but not Abraham's heir.
I’m sorry but this is all your interpretation – Ishmael is called ‘son’ a number of times & doesn’t in any show that son = heir or explain the ‘only son’ – not arguing about who was the promise.
What about Ruth
Ruth 2:13 Holman Christian Standard Bible
My lord,” she said, “you have been so kind to me, for you have comforted and encouraged your
slave, although I am not like one of your female servants.”
Ruth – Moabite (descendant of lot incest) – is also called a ‘slave, maidservant, handmaid – use the same word as Hagar - שִׁפְחָה