Not pointlessly.The Gospel place entire quotes from Isaiah dedicated to Cyrus and pointlessly place them in the gospels, at least in Luke, Jesus last words are not plagiarized.
And it isn't plagiarism. Plagiarism applies to specific types of borrowing and changes depending on genre. Today, if I write a poem or a novel and quote, paraphrase, or play on a line from Shakespeare, the bible, milton, dante, or any number of other famous works or authors, I don't have to to cite the source, and nobody considers it plagiarism. However, if I'm writing a a dissertation or an article for an academic journal, and I take the general thrust of an idea from some other researcher/academic without explicitly citing that person, it's plagiarism. What is or isn't plagiarism even today depends on context.