No anointed Jewish king [from the tribe of Judah] could ever become a priest, nor could a priest [from the tribe of Levi] ever become a king

No anointed Jewish king [from the tribe of Judah] could ever become a priest, nor could a priest [from the tribe of Levi] ever become a king

“Judah is a young lion— my son, you return from the kill. He crouches; he lies down like a lion or a lioness—who dares to rouse him? The scepter will not depart from Judah... ”- Gen 49: 9-10 (Christian Standard Bible)
God’s Law compares the tribe of Judah with a lion [the king of beast]. But since lions were ritually impure, they could not be brought to God’s holy Temple [let alone be offered as sacrifices].
Thus, no king of Judah could act as a priest, nor offer any Temple sacrifices. As is written:
«… But when he [king Uzziah] became strong, he grew arrogant… He acted unfaithfully against the Lord his God by going into the Lord’s sanctuary to burn incense on the incense altar. The priest Azariah, along with eighty brave priests of the Lord, went in after him… and said, “ Uzziah, you have no right to offer incense to the Lord—only the consecrated priests, the descendants of Aaron, have the right to offer incense. Leave the sanctuary, for you have acted unfaithfully!... ”»- 2 Chronicles 26: 16-18, Christian Standard Bible.
And since Christian theology describes Jesus as being both king of the Jews, Lion from the tribe of Judah, and also the High Priest who offered himself as passover sacrifice for our sins («… Pilate also had a sign made and put on the cross. It said: “ Jesus of Nazareth, the King of the Jews ”… Then one of the elders said to me, “Do not weep. Look, the Lion from the tribe of Judah, the Root of David, has conquered … Therefore, holy brothers and sisters, who share in a heavenly calling, consider Jesus, the apostle and high priest of our confession … For Christ our Passover lamb has been sacrificed ”- John 19: 19, Revelation 5: 5, Hebrews 3: 1, & 1 Corinthians 5: 7- CSB), it is therefore fair to say that Christian theology is gravely mistaken.
Why? Again, because God’s Law taught that no lion could be offered in sacrifice, nor could any Jewish king also become a Temple priest [thereby offering Passover sacrifices].

Serving Jesus (“the king of the Jews”)?

When it comes to bringing the nations to embrace the moral teachings of God’s holy Law, faith in Jesus can be a powerful tool. But beware of ever preferring to serve a “flesh and blood” (tangible) king, rather than to [directly] serve the non tangible God of Israel (The Heavenly Father).
Why? Because Israel did not turn away from God, until they asked Him for a “flesh and blood king” to rule upon them; in other words, until they paid more homage to the words (and commandments) of a finite mortal man (their king), than to the words and commandments of their infinite and immortal God (the Heavenly Father).
As is written: « This is what the Lord, the God of Israel, says: “I brought Israel out of Egypt, and I rescued you from the power of the Egyptians and all the kingdoms that were oppressing you”. But today you have rejected your God, who saves you from all your troubles and afflictions. You said to him, “You must set a [flesh and blood] king over us ”»- 1 Samuel 10: 17-19, Christian Standard Bible

Jesus was a great and holy messenger of the Almighty, but he could not have been God, as the Gospels presents him " toying" with sin

Jesus of Nazareth (peace and blessings be with him) seems to have been a great and holy messenger of God; one whose memory people should honor and respect. But, unfortunately, Jesus failed to write down the content of his noble message.
And this gave rise to the odd situation were, although Jesus seems to have been a holy man of God, the theology ascribed to Him [by later gospel writers] seems to be what we would expect from a shrewd and wicked person.
Why? Simply because it seems to portray him as constantly rebelling against God's commandments. The examples of this are are just too many to number, but for the sake of clarity we will consider the following case: The God of Moses (the true and only God) forbade the Hebrew believer from eating any kind of flesh together with blood.
As is written: “ But flesh with the life thereof, which is the blood thereof, shall ye not eat… Only be sure that thou eat not the blood: for the blood is the life; and thou mayest not eat the life [blood] with the flesh ”- Genesis 9: 4, & Deut. 12: 23, (King James Bible);
Yet, although Christianity claims Jesus obedience to the Law was perfect and absolute, the Gospel writers would proceed to picture him “toying” with this sacred commandment, telling his Hebrew followers that unless they eat his flesh and drink his blood they wouldn’t be able to obtain everlasting life.
As is written: “Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you. Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day”- John 6: 53-54;
“And as they were eating, Jesus took bread, and blessed it, and brake it, and gave it to the disciples, and said, Take, eat; this is my body. And he took the cup, and gave thanks, and gave it to them, saying, Drink ye all of it; For this is my blood of the new testament, which is shed for many for the remission of sins”- Matthew 26: 26-28.
Thus, Reformed Samaritans find it impossible to accept the theology that the holy Gospel ascribes to Jesus, as doing so makes him feel he is betraying what has been commanded by the true God of Israel.