Jewish members of the original Star Trek cast beamed up Passover greetings to their Twitter followers on Monday in advance of the first night of the weeklong holiday.

William Shatner, better known as James Tiberius Kirk of the starship Enterprise, and Leonard Nimoy, also known as Mr. Spock, wished their hundreds of thousands of social media followers Passover greetings before their seders.

Shatner fired the first salvo, wishing Nimoy a happy birthday and a happy holiday in transliterated Hebrew.

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Nimoy responded hours later with an interpretation of the Passover holiday.

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Nimoy closed his tweet with an abbreviation of his eternal line as Spock from the Star Trek series: Live Long and Prosper.