Concise Bible Dictionary:
Mashiach, the anointed, is an official title in the Old Testament of those who were to rule for God (1 Sam. 12:3,5; 1 Sam. 26:9,11,16; 2 Chron. 6:42; Isa. 45:1). In the New Testament the title is restricted to the Lord Jesus ὁ χριστός the Christ — as the One anointed, not with oil, but with the Holy Spirit by God the Father. This had been predicted in Psalm 45:7, of which John the Baptist was the witness (Mark 1:10; John 1:32-34; compare also Acts 10:38). He was called God’s anointed by Hannah (1 Sam. 2:10), and by David (Psa. 2:2). Daniel spoke of Messiah the Prince, and that He would be cut off and have nothing (Dan. 9:25-26). The Samaritans as well as the Jews expected this anointed One, the Christ; and when He appeared souls were brought into living intercourse with Him, and owned Him as the promised One (John 1:41; John 4:25). In these two passages the Lord is called “Messias,” the word being simply the Greek form of the Hebrew word mashiach. In other places a translation is used and He is called ὁ χριστός, “the Christ,” the anointed One. See CHRIST.