Rest in peace (acronym R.I.P.) in the second person singular, or “Requiescite in pace” in the second person plural. In the common phrase "Requiescat in pace" the "-at" ending is appropriate because the verb is a third-person singular present active subjunctive used in a hortative sense: "May he/she rest in peace." The phrase was first found on tombstones some time before the fifth century. It became ubiquitous on the tombs of Christians in the 18th century, and for High Church Anglicans, Methodists, as well as Roman Catholics in particular, it was a prayerful request that their soul should find peace in the afterlife.
Latin influence in English in its classical and medieval forms. In turn, Late Latin also included borrowings from Greek. The dawn of the age of scientific discovery in the 17th and 18th centuries created the need for new words to describe newfound knowledge. Many words were borrowed from Latin, while others were coined from Latin roots, prefixes, and suffixes, and Latin word elements freely combine with elements from all other languages including native Anglo-Saxon words. Some of the words which entered English at this time are: apparatus, aqueous, carnivorous, component, corpuscle, data, experiment, formula, incubate, machinery, mechanics, molecule, nucleus, organic, ratio, structure, vertebra. In