I used the Strong's Exhaustive Concordance -- King James Bible related for this information.
Not once is casting out devils mentioned in the Old Testament. Not once is devil possession mentioned in the Old Testament.The word devils is ONLY mentioned four times in the Old Testament and three of those times it's in reference to sacrificing to devils.
In contrast, the New Testament mentions being possessed by devils, casting out devils . . .
The word devils is mentioned 50 times in the NT and ONLY four times in the OT. The word devil is mentioned 61 times in the NT and NEVER in the OT.
The word devils is mentioned 50 times in the NT and ONLY four times in the OT. The word devil is mentioned 61 times in the NT and NEVER in the OT.