They shewed. — Literally, They placed, i.e., did.
His signs. — Literally (as in margin), the words of his tokens; but it may also be rendered, “the details of his signs.”(Comp. Psalms 65:3 : “matters of iniquity,” or, “details of sin.”) So here, “details of signs,” i.e., signs in detail or sequence, sign after sign.