c.1300, from pp. of obs. verb sacren "to make holy" (c.1225), from O.Fr. sacrer (12c.), from L. sacrare "to make sacred, consecrate," from sacer (gen. sacri) "sacred, dedicated, holy, accursed," from O.L. saceres, which Tucker connects to base *saq- "bind, restrict, enclose, protect," explaining that "words for both 'oath' & 'curse' are regularly words of 'binding.' " But Buck merely groups it with Oscan sakrim, Umbrian sacra and calls it "a distinctive Italic group, without any clear outside connections." Nasalized form is sancire "make sacred, confirm, ratify, ordain." Sacred cow "object of Hindu veneration," is from 1891; fig. sense is first recorded 1910, from Western views of Hinduism. ~Online Etymology Dictionary
1 a: dedicated or set apart for the service or worship of a deity b: devoted exclusively to one service or use (as of a person or purpose)
2 a: worthy of religious veneration : holy b: entitled to reverence and respect
3: of or relating to religion : not secular or profane
4archaic : accursed
5 a: unassailable, inviolable b: highly valued and important
If anyone destroys God's temple, God will destroy him; for God's temple is sacred, and you are that temple.1 Corinthians 3:16-18 (in Context) 1 Corinthians 3 (Whole Chapter)
What is sacred to you?