Only Christ being God could He be with every believer at all times (Matthew 28:20). This holds true also for prayer (Matthew 18:20). Although others can be referred to as “Immanuel,” Christ is truely with us as God.
Steven Tsoukalas: This declaration of Christ in Matthew 28:20 is in the style of deity, for only Yahweh can declare His presence with His people (Knowing Christ in the Challenge of Heresy, page 58).
It is ineteresting how close Matthew puts the worship of Christ (Matthew 2:11) with the command to worship God alone (Matthew 4:10). As used in the NT proskyneō is the worship for God alone - not for the devil (Revelation 13:4), not for false gods (Acts 7:43; Revelation 9:20), not for apostles (Acts 10:25) and not for angels (Revelation 22:8). This worship is “for God” (Revelation 22:9). In fact, the absolute holiness of God (who alone is holy) forms the foundation of this worship ascribed unto Him (Revelation 15:4). To assert that others can properly receive this worship is to denigrate God’s holiness.
Don’t forget also that according to Matthew 28:18 Christ is omnipotent (= God).
In terms of my observations concenrng the phrases of Luke falling flat on their face, none of your examples refutes what I have asserted. Those in Luke 16:5 are not referred to as “Lord” - the same hold true for Genesis 12:2 and Luke 2:31-32.
Here they are again:
a. In the sight of the Lord (Luke 1:15; cf. 2 Corinthians 8:21).
b. Magnify the Lord (Luke 1:46; cf. Acts 19:17).
c. The glory of the Lord (Luke 2:9; cf. 2 Corinthians 8:19).