Jonah 2:8

(8) They that observe lying vanities.—See Note, Psalms 31:6.

Forsake their own mercy—i.e., forfeit their own share of the covenant grace. In Psalms 37:28 it is said that Jehovah does not forsake his chasîdim; they, however, by forsaking Jehovah (Himself called Israel’s mercy, Psalms 144:2, margin) and His law (Psalms 89:30) can forfeit their chesed or covenant privilege.