The law of Moses is not the gospel.
Please explain to me how there can be more than one gospel.
You say this is not gospel unto Israel?
Deuteronomy 18:
15. The LORD thy God will raise up unto thee a Prophet from the midst of thee, of thy brethren, like unto me; unto him ye shall hearken;
16. According to all that thou desiredst of the LORD thy God in Horeb in the day of the assembly, saying, Let me not hear again the voice of the LORD my God, neither let me see this great fire
any more, that I die not.
17. And the LORD said unto me, They have well spoken that which they have spoken.
18. I will raise them up a Prophet from among their brethren, like unto thee, and will put my words in his mouth; and he shall speak unto them all that I shall command him.
19. And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him.
Mark 1:
1. The beginning of the gospel of Jesus Christ, the Son of God;
2. As it is written in the prophets, Behold, I send my messenger before thy face, which shall prepare thy way before thee.
3. The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight.
What is that gospel unto Israel?
John 1:
41. He first findeth his own brother Simon, and saith unto him, We have found the Messias, which is, being interpreted, the Christ.
45. Philip findeth Nathanael, and saith unto him, We have found him, of whom Moses in the law, and the prophets, did write, Jesus of Nazareth, the son of Joseph.
49. Nathanael answered and saith unto him, Rabbi, thou art the Son of God; thou art the King of Israel.
Matthew 16:
13. When Jesus came into the coasts of Caesarea Philippi, he asked his disciples, saying, Whom do men say that I the Son of man am?
14. And they said, Some say that thou art John the Baptist: some, Elias; and others, Jeremias, or one of the prophets.
15. He saith unto them, But whom say ye that I am?
16. And Simon Peter answered and said, Thou art the Christ, the Son of the living God.
17. And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven.
18. And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it.
19. And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.
20. Then charged he his disciples that they should tell no man that he was Jesus the Christ.
Peter preaching the 2nd Coming after the Lord's Prophesied Wrath - Acts 3:
17. And now, brethren, I wot that through ignorance ye did it, as did also your rulers.
18. But those things, which God before had shewed by the mouth of all his prophets, that Christ should suffer, he hath so fulfilled.
19. Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord.
20. And he shall send Jesus Christ, which before was preached unto you:
21. Whom the heaven must receive until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began.
22. For Moses truly said unto the fathers, A prophet shall the Lord your God raise up unto you of your brethren, like unto me; him shall ye hear in all things whatsoever he shall say unto you.
23.
And it shall come to pass, that every soul, which will not hear that prophet, shall be destroyed from among the people.
Compare that with Moses in Deuteronomy 18, again:
18. I will raise them up a Prophet from among their brethren, like unto thee, and will put my words in his mouth; and he shall speak unto them all that I shall command him.
19. And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him.
Back to Acts 3:
24. Yea, and all the prophets from Samuel and those that follow after, as many as have spoken, have likewise foretold of these days.
25. Ye are the children of the prophets, and of the covenant which God made with our fathers, saying unto Abraham, And in thy seed shall all the kindreds of the earth be blessed.
26. Unto you first God, having raised up his Son Jesus, sent him to bless you, in turning away every one of you from his iniquities.
That is Israel's Prophesied Grace - 1 Peter 1:
10. Of which salvation the prophets have enquired and searched diligently, who prophesied of the grace that should come unto you:
11. Searching what, or what manner of time the Spirit of Christ which was in them did signify, when it testified beforehand the sufferings of Christ, and the glory that should follow.
12. Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into.
13. Wherefore gird up the loins of your mind, be sober, and hope to the end for the grace that is to be brought unto you at the revelation of Jesus Christ;
Compare that with Acts 3, again:
19. Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord.
20. And he shall send Jesus Christ, which before was preached unto you:
21. Whom the heaven must receive until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began.
Romans 11:25-29 asserts that is on hold. That is this here - Romans 15:8-12.
That is now on hold until this here - Romans 15:13-21, be come in.