As it is the penchant of most people when they are excited or frustrated or just simply in a state of rage, to utter an epithet of one sort or other... it was only a matter of time before the third Commandment be taxed in this area [thou shalt not take the name of the Lord in vain...].
And of all the people I've heard utter "Jesus H. Christ" aloud [and there were many]... only one fellow bothered to explain it to me one day when my curiosity got the best of me and I inquired of him.
According to the man, the "H" in "Jesus H. Christ" stands for "Himself."
It is indeed a less than reverent application of the Lord's name... but at the same time there are infinitely worse ones out there. The Lord, however, doesn't list His Commandments in "degrees of severity"... and everyone's infraction of them will be accounted for... as the Commandment ends: "...for the Lord will not hold him guiltless that taketh His name in vain." (Ex.20:7)
So, while this is a somewhat less than historical account... I chalk it up as a life experience that became a part of my personality and who I am. Whatever that may be.
Another factor to consider:
Another factor to consider in why people put an H between Jesus and Christ when they want a good robust expletive is the change in configuration of your lips and tongue while saying the phrase. After you say "Jesus", your lips are relaxed and close to your teeth and your tongue is low and towards the rear in your mouth. To then say "Christ" you have to protrude your lips and move your tongue up against the back of your palate. You could reconfigure your mouth silently, or you could say "H" which accomplishes the same reconfiguration but has the advantage of filling up that smidgen of time with a sound that adds a bit more presence to the expletive. This is why "Jesus H Christ!" rolls off your tongue a bit more smoothly than just "Jesus Christ!"
While there may or may not be some other explanation for the actual origin of the H, the reason it continues to be used may be because of the felicitous mouth configuration needed to say "H" in English.
Additional Comments:
To tell you the truth I really dont know but if I had to guess I would say it stands for Holy.
Answers vary, from "nothing in particular", to "Harold" (in Natural Born Killers) to "Heroin" ("religion is the opiate of the masses").
In that context, it is used only as an infix to intensify the effect of the blasphemous interjection. The "H" could be argued to stand for "Holy" but that is unlikely in the context.
Jesus Holy Christ
follower of Jesus Christ
Jesus H. Christ
No
Jesus (explicative) Christ On A Pogo Stick
it is a holiday, observed generally on dec 25 to celebrate the birth of jesus christ.
To make him stand out from the rest
The Church of Jesus Christ of Latter-Day-Saints.
Jesus H. Christ
The cross without Jesus on it signifies that He is risen & no longer on the cross..Jesus is alive.
It has the same initials (J. C.) as Jesus Christ. It was a euphemism or minced oath standing for the exclamation of the name of Jesus Christ. Its use preceded the Pinochio movie by Disney where the Jimney Cricket character appears.
James H. Anderson has written: 'The Church of Jesus Christ of Latter-day Saints' -- subject(s): Accessible book, Mormons, Church of Jesus Christ of Latter-day Saints, History
The teachings of Jesus ARE Christ's message because he was Jesus Christ. Christ and Jesus are the same person.