'Horn' in the Bible

Then Hannah prayed and said,“My heart exults in the Lord;My horn is exalted in the Lord,My mouth speaks boldly against my enemies,Because I rejoice in Your salvation.

“Those who contend with the Lord will be shattered;Against them He will thunder in the heavens,The Lord will judge the ends of the earth;And He will give strength to His king,And will exalt the horn of His anointed.”

Now the Lord said to Samuel, “How long will you grieve over Saul, since I have rejected him from being king over Israel? Fill your horn with oil and go; I will send you to Jesse the Bethlehemite, for I have selected a king for Myself among his sons.”

Then Samuel took the horn of oil and anointed him in the midst of his brothers; and the Spirit of the Lord came mightily upon David from that day forward. And Samuel arose and went to Ramah.