“Be it known unto you all, and to all the people of Israel, that by the name of Jesus Christ of Nazareth, whom ye crucified, whom God raised from the dead … neither is there salvation in any other; for there is no other name under heaven given among men, whereby we must be saved.” (Acts 4:10,12)
The name of Jesus, as we have it in the New Testament by way of the Greek language, or Joshua (i.e., Yeshua) in Hebrew, means “Jehovah [i.e., the Lord] is salvation”. As the angel told Joseph, the child to be born of the virgin Mary was to be named “JESUS, for He shall save His people from their sins” (Matthew 1:21). The child was also to be called “Immanuel, which, being interpreted, is God with us” (Matthew 1:23); that Jesus would be known as Immanuel (i.e., a manifestation of God Himself) is not uniquely a New Testament notion, but comes directly from the Old Testament (Isaiah 7:14).
In a similar way, the name JESUS also comes from the Old Testament. Isaiah 62:11 reveals:
“Behold, the Lord hath proclaimed unto the end of the earth, Say ye to the daughter of Zion, Behold, thy salvation cometh; behold, his reward is with him, and his work before him.”
In this verse given through the prophet Isaiah, “salvation” (Heb., Yesha) is a Person (note the masculine pronouns “his” and “him” used in the clauses that follow). A Person who will be known as “salvation” is said to be coming, bringing both his “reward” and his “work”; clearly, this is the Person of JESUS. Compare this verse with Isaiah 40:10, which reads:
“Behold, the Lord God will come … behold, his reward is with him, and his work before him.”
Isaiah 40:10 asserts exactly the same truth, using exactly the same words, as Isaiah 62:11, but in this instance the Person known as “salvation” is identified as “the Lord God”. Thus, the Person known as “salvation”, that is Jesus, is equated with Divinity; Jesus and Jehovah are one (cf. 10:30). Such equations of “Jesus” and “Jehovah”, which are implicit assertions of the Deity of Jesus Christ, are common between the New and Old Testaments (Cp., Hebrews 1:8; Psalm 45:6).
Finally, consider the words of Jesus Himself, spoken in the closing chapter of the Bible. Revelation 22:12 records Jesus as saying:
“… behold, I come quickly, and my reward is with me …”
Jesus takes the words of “the Lord God” spoken in Isaiah 40:10, the very same words that in Isaiah 62:11 are ascribed to a Person known as “salvation”, for Himself. Jesus connects the dots for us. The name of “Jesus”, by which alone comes salvation, just like “Immanuel” comes straight out of the Old Testament!