Commentaries:
Robertson's Word Pictures (NT)
Ashes (spodov). Old word, in N. T. only here, Matthew 11:21; Luke 10:13. Common in LXX.
Of a heifer (damalewv). Old word (damaliv), a red heifer whose ashes mingled with water (meta udatov, verse Hebrews 9:19) were sprinkled (rantizousa, present active participle of rantizw, in LXX, though rainw more common) on the contaminated or defiled ones (Num. 19) as the blood of bulls and goats was offered for sins (Lev. 16).
Sanctify (agiazei). First-class condition, assumed as true. This ceremonial ritual does serve "for the cleansing (kaqarothta, old word here only in N.T.) of the flesh," but not for the conscience (verse Hebrews 9:9). The cow was amwmon, the individual kaqarov.
Other Robertson's Word Pictures (NT) entries containing Hebrews 9:13:
Matthew 15:11
Galatians 5:18
Hebrews 2:11
1 Peter 1:2
1 Peter 3:21
1 John 1:7
1 John 3:5
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