Where is God's word?

With all the differing translations and manuscripts a good question is: where is God's word. I formerly had a belief about such a question that changed based on something I came across in the scriptures.

Heard the good news?
https://rumble.com/vm9asu-the-gospel.html

Scriptures addressed in this video:
Isaiah 40:8
Isaiah 61:1
Isaiah 61:2
Luke 4:14
Luke 4:15
Luke 4:16
Luke 4:17
Luke 4:18
Luke 4:19
Luke 4:20
John 10:35
1 Peter 1:23