old as the hills, (as)

old as the hills, (as)

Very old indeed. The term refers, presumably, to geological time, when mountains were first formed, but one writer suggests a relation to a biblical passage: “Art thou the first man that was born? or wast thou made before the hills” (Job 15:7). The expression dates from about 1800 and was used by Sir Walter Scott and Charles Dickens, among others. See also as old as Adam; from time immemorial.
See also: old