13. since that time--rather, "respecting that time" [HORSLEY]. BARNES translates it, "formerly" in contrast to "but now" (Isa 16:14): heretofore former prophecies (Ex 15:15; Nu 21:29) have been given as to Moab, of which Isaiah has given the substance: but now a definite and steady time also is fixed.
JFB.
Picture Study Bible