when he visited Mary and declared: “The Lord is with thee” - Luke 1:28. Nor did Zacharias mean that John the Baptizer (his new son) was actually God when he was asked, “I wonder what this child [John] will turn out to be?”, and he answered, “Praise the Lord, the God of Israel, for he has come to visit his people and has redeemed them.” - Luke 1:66-68, LB.
Gabriel and Zacharias (Zechariah) meant exactly what Israelites have meant throughout thousands of years when saying “God is with us” and similar statements. They meant “God has favored us” or “God is helping us”! - Gen. 21:22; Ex. 18:19; Nu. 23:21; josh. 1:9; 1 Chron. 17:2; 2 chron. 1:1; 35:21; ezra 1:3; is. 8:10. And Joshua 1:17; 1 Samuel 10:7; 2 Chron. 15:2-4, 9 (cf., Jer. 1:8; Haggai 1:13). But if we insist on trinitarian-type “proof,” then Gabriel must have meant that he (Gabriel) is God! And Zacharias (whose own name means ‘Jehovah is renowned’ - p. 678, TDOTB) must have meant that John the Baptizer is God! – Also see 1 Sam. 17:37; 2 Sam. 14:17; 1 Ki. 8:57; 1 Chron. 17:2; 22:18; 2 Chron. 36:23; Is. 41:10; Amos 5:14; Zech 8:23. (Also see “Immanuel” in the Insight books.)
This understanding is seen throughout the Bible. For example, “But if all prophesy, and an unbeliever or outsider enters, he is convicted by all, he is called to account by all, the secrets of his heart are disclosed; and so, falling on his face, he will worship God and declare that God is really among you.” - 1 Corinthians 14:24-25, RSV.
Or, in a Psalm many of us apply to ourselves or our friends:
4 Yea, though I walk through the valley of the shadow of death, I will fear no evil; for thou art with me - ASV.
The acclaimed trinitarian Bible dictionary, The New International Dictionary of New Testament Theology, 1986, Vol. 2, pp. 86, 87, states:
“The name Emmanuel [or Immanuel] which occurs in Isa. 7:14 and 8:8 means lit. ‘God [is] with us’ .... In the context of the times of Isaiah and King Ahaz the name is given to a child as yet not conceived with the promise that the danger now threatening Israel from Syria and Samaria will pass ‘before the child knows how to refuse evil and choose the good.’ Thus, the child and its name is a sign of God’s gracious saving presence among his people .... [The name Emmanuel] could be a general statement that the birth and naming of the special child will indicate that the good hand of God is upon us.” - p. 86. And, “The point of the present passage [Matt. 1:23] is to see in the birth of Jesus a saving act of God, comparable with the birth of the first Emmanuel. Both births signify God’s presence with his people through a child.” - p. 87.
Or as noted trinitarian scholar Murray J. Harris tells us:
“Matthew [in Matt. 1:23] is not saying, ‘Someone who is “God” is now physically with us,’ but ‘God is acting on our behalf in the person of Jesus.’” - p. 258, Jesus as God, Baker Book House, 1992. (emphasis added)