I remind you of what Scofield actually wrote - a direct contradiction of Scripture:
The Fourth Dispensation: Promise. For Abraham, and his descendants it is evident that the Abrahamic Covenant (See Scofield "Genesis 15:18") made a great change. They became distinctively the heirs of promise. That covenant is wholly gracious and unconditional. The descendants of Abraham had but to abide in their own land to inherit every blessing. In Egypt they lost their blessings, but not their covenant. The Dispensation of Promise ended when Israel rashly accepted the law Exodus 19:8 . Grace had prepared a deliverer (Moses), provided a sacrifice for the guilty, and by divine power brought them out of bondage Exodus 19:4 but at Sinai they exchanged grace for law. The Dispensation of Promise extends from Genesis 12:1 to Exodus 19:8, and was exclusively Israelitish. The dispensation must be distinguished from the covenant. The former is a mode of testing; the latter is everlasting because unconditional. The law did not abrogate the Abrahamic Covenant Galatians 3:15-18 but was an intermediate disciplinary dealing "till the Seed should come to whom the promise was made" ; Galatians 3:19-29 ; 4:1-7 . Only the dispensation, as a testing of Israel, ended at the giving of the law.
God loving care for Israel - as promised to Abraham - did not end with their "rash acceptance of the Law" because the Law was not given as a condition receipt of the unconditional promises, but was for the orderly condition of the nation in the promised land. Both Joshua & Solomon understood that the promises were indeed realised to the people. Solomon certainly know there was more, as Stephen declared - & suffered for the truth.
The promises were perfectly fulfilled in Christ, when all who responded to the Gospel of Jesus were truly & eternally saved. Many tens, hundreds of thousands in Apostolic times & who knows how many down the ages, who with all families of the earth be blessed. (Gen. 12, 22, Gal. 3, etc)
That Law that Israel "rashly accepted" is a restatement of the promises - wonderful promises - that Peter applies to the church. Never forget that the church comprises both Jew & Gentile as one people of God in Christ, inheriting all the promises to Abraham & the Patriarchs.
1 Peter 2:1 Wherefore laying aside all malice, and all guile, and hypocrisies, and envies, and all evil speakings, 2 as newborn babes, desire the sincere milk of the word, that ye may grow thereby: 3 if so be ye have tasted that the Lord is gracious. 4 To whom coming, as unto a living stone, disallowed indeed of men, but chosen of God, and precious, 5 ye also, as lively stones, are built up a spiritual house, an holy priesthood, to offer up spiritual sacrifices, acceptable to God by Jesus Christ. 6 Wherefore also it is contained in the scripture, Behold, I lay in Sion a chief corner stone, elect, precious: and he that believeth on him shall not be confounded. 7 Unto you therefore which believe he is precious: but unto them which be disobedient, the stone which the builders disallowed, the same is made the head of the corner, 8 and a stone of stumbling, and a rock of offence, even to them which stumble at the word, being disobedient: whereunto also they were appointed. 9 But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light: 10 which in time past were not a people, but are now the people of God: which had not obtained mercy, but now have obtained mercy.
11 Dearly beloved, I beseech you as strangers and pilgrims, abstain from fleshly lusts, which war against the soul; 12 having your conversation honest among the Gentiles: that, whereas they speak against you as evildoers, they may by your good works, which they shall behold, glorify God in the day of visitation.