Luke 3:4-6; NKJV
4 as it is written in the book of the words of Isaiah the prophet, saying:
"The voice of one crying in the wilderness:
'Prepare the way of the Lord;
Make His paths straight.
5 Every valley shall be filled
And every mountain and hill brought low;
The crooked places shall be made straight
And the rough ways smooth;
6 And all flesh shall see the salvation of God.'"
Luke is the only gospel to quote "And all flesh shall see the salvation of God" from Isaiah 40:5. He is communicating the universalism of the gospel. There is no kind of person the gospel cannot reach.
