OK, other things the common Bible lists, like repentance (Luke 13:3), confession of Jesus before men (Rom 10:9), doing God's will (Mat 7:21, 1John 2:17, etc.), etc. are unnecessary for salvation, for you?
No , God deal differently with different people .
You don't go like Noah to build a boat for 120 years to be saved just as you don't prove your faith to God by attempting to sacrifice your son as Abraham .
Gospel of the Kingdom preached by Christ was for Jews which were promised the Kingdom to inherit .
They rejected thier King and crucify him , God gave them second Chance by preaching to them the Gospel by his Apostles but they rejected them aswell.
Then God called a guy Saul who was crucifying early Christians and made him Apostle to Gentiles , these ungodly pagan nations to provoke God's choosen people- Israel to jelaousy.
Ephesians 3:2-13 King James Version (KJV)
2 If ye have heard of the dispensation of the grace of God which is given me to you-ward:
3 How that by revelation he made known unto me the mystery; (as I wrote afore in few words,
4 Whereby, when ye read, ye may understand my knowledge in
the mystery of Christ)
5 Which in other ages was not made known unto the sons of men, as it is now revealed unto his holy apostles and prophets by the Spirit;
6 That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel:
7 Whereof I was made a minister, according to
the gift of the grace of God given unto me by the effectual working of his power.
Mystery means something which was not revealed before , it was not revealed by Christ that gentiles will be saved , look what Christ said :
Matthew 10:5-6 King James Version (KJV)
5 These twelve Jesus sent forth, and commanded them, saying, Go not into the way of the Gentiles, and into any city of the Samaritans enter ye not:
6 But go rather to the lost sheep of the house of Israel.
It was untill Jews rejected thier King .
Romans 11:11
“I say then, Have they stumbled that they should fall? God forbid: but
rather through their fall salvation
is come unto the Gentiles, for to provoke them to jealousy.”
Romans 11:25 King James Version (KJV)
25 For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.
You can't be saved trying to be like Jesus , but you can accept his atonement in your place .
1 Corinthians 15:1-4 ,
And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day