decree = prescribed limit or boundary. So the Oxford Gesenius, p. 349. Compare Job_26:10; Job_38:10. Pro_8:29. Isa_24:5. Jer_5:22. Hebrew. chok.
be far removed = become distant: i.e. extended. See the Oxford Gesenius, p. 935. Hebrew. rachak, as in Isa_26:15. Note the Figure of speech Paronomasia (App-6), yir'chok.