First of all, how do you "steal" a religious idea?
This is an interesting question. Actually "Stealing" [ In my humble opinion] is not the right word.
But some people think, Christianity "adopted" or "accepted" some pagan European practices which were not part of what Jesus preached. Another group of people says that, modern Christians do not follow original teaching but they follow teaching of Paul. As Paul gave different explanation of what Jesus meant in his teachings.
According to history and scripture, Jesus came from Jewish tribe and he was a practicing Jew. Therefore, he honored saturday sabath and did not eat pork ( Banned in the OT by God). The Bible says......
And the swine, though he divide the hoof, and be clovenfooted, yet he cheweth not the cud; he is unclean to you.
They that sanctify themselves, and purify themselves in the gardens behind one tree in the midst, eating swine's flesh, and the abomination, and the mouse, shall be consumed together, saith the LORD.
And the swine, because it divideth the hoof, yet cheweth not the cud, it is unclean unto you: ye shall not eat of their flesh, nor touch their dead carcase.
Jesus was very serious about these laws. He said (In the Bible)
"Do not think that I came to destroy the Law or the Prophets. I did not come to destroy but to fulfill. For assuredly, I say to you, till heaven and earth pass away, one jot* or one tittle will by no means pass from the law till all is fulfilled. Whoever therefore breaks one of the least of these commandments, and teaches men so, shall be called least in the kingdom of heaven; but whoever does and teaches them, he shall be called great in the kingdom of heaven. For I say to you, that unless your righteousness exceeds the righteousness of the scribes and Pharisees, you will by no means enter the kingdom of heaven."
[ *A jotis the smallest letter in the Greek and Hebrew alphabets; a tittle is the small stroke in certain Hebrew letters. Thus, the whole of the law is the foundation of the new teaching.]
Now a days you will not find many Christians who reject pork following Jesus's instruction. Only groups of people I know that follows the such laws are Jews and Muslims. While Jews do not accept Jesus as a religious figure that leaves Muslims as the only non-Christian group who not only accepts Jesus as part of religion but honor laws of OT [ As a religious practice] by rejecting pork.
There are similar discussions/debates about using Sunday as day of worship/rest day. I knew some Christians ( A small sect within Christianity) who used Saturday as day of worship and did not work on that day.
There are few more areas like this where people ask if these are modern adoption or part of what Jesus taught us.
Following this discussion, I think this is what our fellow member meant. Hope this was some help.
I know there are other members who are far wiser than me in these matters. I am sure they can add more to this discussion.
May you have a blessed day.
There is one God who reveled himself to whom so ever feared God and wanted know the true God. Jesus has not started a new religion.
Muslims think that God won’t come in a human form and God cannot be killed by human beings.
For them Jesus is a great profit but not crucified in a cross instead of him Judas was crucified.
Original Hindu Vedas predicted sacrifice for forgiveness of sin exactly like death and resurrection of Jesus
In those days very few could read some of them for selfish reasons preached false religion which persists till now.
Buddha searched for true reasons for human sufferings God gave him wisdom and he preached nonviolence and not to covet
God gave Ten Commandments through Moses
God gave wisdom to Confucius who teaches similar to Ten Commandments
God gave wisdom to Thiruvalluvar of south India who’s poems ware similar Jesus teachings
All men could not obey and fulfill all the commandments hence God the father sent his son as sacrifice for all our sins. By putting our faith in him and getting forgiveness of our sins by forgiving all sins against us unconditionally .This is the true spiritual life.
Jesus is the only Way, Truth and Life.
We have to attend church for worship and strengthen our faith.