1. A hypocrite, who is said to have a double heart, Psa_12:2. Or rather;
2. He that is of a doubtful mind, wavering, and fluctuating with contrary motions, sometimes of one mind, sometimes of another; sometimes hoping, sometimes desponding.
Is unstable; either unconstant, without any fixedness or consistency of spirit, as ready to depart from God as to cleave to him; or unquiet, troubled, full of inward tumults.
In all his ways; by a Hebraism, ways, for counsels, purposes, actions, &c.