Out of heaven. See 1 Samuel 7:10.
His king. First occurrence. Compare Psalms 2:6.
His Anointed. His Messiah. The first occurrence as used of Christ. So Septuagint and Vulgate.
Anointed. Septuagint reads "Christos". Christ.
Related Commentaries of 1 Samuel 2:10
1 Samuel 2:10
10 The adversaries of the LORD shall be broken to pieces; out of heaven shall he thunder upon them: the LORD shall judge the ends of the earth; and he shall give strength unto his king, and exalt the horn of his anointed.