its like saying swear to god, but to our savior jah
person 1- dude i'm really finna die
person 2- on jah?
person 1- on jah
by bruhmomentlord November 18, 2019
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on jah
on jah
by zacboob November 19, 2019
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A phrase after the nigga Jahseh Onfroy otherwise known as XXXTENTACLES (xxxtentacion) or xxxtennisball69 you use it in certain situations like "On God" or "On my Momma"
Niggatron: Bro did you really just cop that jacket for 2 grand?
Tekashi 69: You know what im saying this gang shit man On JAH bro i swear to you STOOPID
by patrickscrabbypatties March 5, 2019
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"on jah" is a term used when paying respect to the late rapper xxxtentacion or JAH or whe 100 percent serious about something
me and my homies love to suck dick on jah- austin
bro fuck me on jah - brayden
bro on jah rip x - josh
by gxdszen February 17, 2019
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“On Jah” is the same as the phrase “On God” with the word God replaced with the word Jah. It means essentially the same thing and is used in the same contexts as “I swear to god”.

Jahseh Onfroy (often shortened to "Jah") was the real-life-name of the late Floridian African-American rapper, song writer, and alternative-metal artist "XXXTentacion".

In his song “Train food”, he seemingly predicted the details of his own murder. The moments of him pleading for his life before getting run over by the train, line up perfectly with him begging the shooter not to do it as he “had a kid on the way” which eye witnesses believe to be some of his last words, the feelings of helplessness as the train barrels towards him at full speed with no way of stopping it, line up perfectly with how he bled out from his neck (basically the full-speed equivalent of bleeding out) with nothing the hospital staff could do to save him (the equivalent of not being able to stop a speeding train), along with many other symbolisms that seemingly predicted his own death right down to the last detail.

This prophet-like prediction of his own death, made many people on the internet start to compare him to another prophet, Jesus, and in the church Jesus is actually a physical manifestation of God, so in saying “On God” you are saying the same thing as “On Jesus” and so since people now viewed him as similar to Jesus, saying “On Jah” was a the next logical step in the evolution of this phrase.
Don't fucking touch me, on Jah, I will fuck you up vro

Oh shit he serious, I'm finna head out then nevermind
by Nicotine-Free Vape-Juice March 18, 2019
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A sacred meaning similar to "on god" must be used only in desperate times.
"On jah I just saw sassy cook up another trippa snippa"
by Epic word guy September 18, 2019
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a phrase or term describing how truthful or serious you are being. used to insure the others you are being super serious about any given situation
bro 1: bruh in end game ant man went up thanos’ ass.
bro 2: on jah?
bro 1: on jah.
by heartbroken homie May 16, 2019
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