Reddit User Supporter Let the corpus of my replies speak for my beliefs

No. 
And yes. 

No, because Christianity wasn't a blip on the radar when the psalmist wrote that particular psalm.

Biblical Judaism has G-d as their lord. And so, when the Supreme Ruler of the universe, our Creator G-d is someone who has absolute sovereignty in our lives, then the LORD is our G-d, and we are a people whose G-d is the LORD. 

Lord is a title that means "Master." 

G-d asks this at specific points. "If I am your Father, where is my honor? If I am your Master (Lord) where is your allegiance and servitude?" (Mal 1:6)

Both Judaism and Christianity serve G-d in their own ways. As far as this Psalm goes, it was about Judaism then, long before the term "Christian" was coined.

Today, when Christians follow Yeshua and serve G-d with all their heart, mind, soul and body then they are making G-d their Lord.

This is known in Judaism as the Shema and Ve'ahavta, wholehearted devotion to G-d. 

It seems the real question you're asking is, do all paths lead to G-d? 
While all creation speaks to the existence of G-d, and He is calling everyone to repentance and a changed life, not everyone listens!

There's are eBible topics on whether or not other religions can lead to G-d here: 

https://ebible.com/questions/2878-why-are-there-so-many-religions-do-all-religions-lead-to-god
https://ebible.com/questions/7576-what-is-the-gospel-of-god
https://ebible.com/questions/22343-what-is-the-way-of-salvation

11 days ago • 1 response • Vote Up • Share • Report