Definition of "consisteth"

After this contencion, the common people did ſticke vnto king Agis, and the riche men followed Leonidas, praying and perſwading him not to forſake them: and further, they did ſo intreate the Senators, in whom conſiſteth the chiefe authority, […]

1579, Plutarke of Chæronea [i.e., Plutarch], “Agis and Cleomenes”, in Thomas North, transl., The Lives of the Noble Grecians and Romaines, […], London: […] Richard Field, page 852