Why it is worth learning Hebrew

A friend who was converted in a Pentecostal church was telling me the other day about his unease with speaking in tongues in the service he went to.
He said though it felt like a real experience to him, the whole 'everybody do it at once' thing was clearly against the scripture (1 Cor 14) and he wondered whether the whole thing was a sham.
Anyways, he tells me, he only ever really said one word over and over, and didn't know what it meant. Offhand he tells me the word.
"It was like shovtah or shavtah".
"Hmm, sounds Hebrew. Could be the feminine imperative "Cease!, or the masculine perfect 'return (repent)'

HaHaHa.
we both laughed heartily