Thomas Lamb (died c. 1672 or 1686) on Salvation Available in Christ for All

...God commandeth no man to believe in Christ for salvation for whom there is no salvation in him; or that God on the contrary upon all occassions counseleth and chargeth men to take heed of uncertain, empty and vain dependencies, and from seeking help, peace and safety where they are not to be found.

Thomas Lamb, Absolute Freedom from Sin by Christs Death for the World (London: Printed by H. H. for the Authour, and are to be sold by him, 1656), 268.

It doesn't get plainer than this: If Christ only suffered for the sins of the elect, then God is commanding the rest to believe in Christ for salvation for whom there is no salvation in him. They are being counseled and charged by God [and us] to depend on something uncertain, empty and vain. They are being told to seek help, peace and safety where they are not to be found.

Bio:
Brook
McClintock & Strong
DNB