Romans 10:8, 13
(8) But what does it say? “The word is near you, in your mouth and in your heart”—that is, the word of faith which we are preaching,
(13) for “Whoever will call on the name of the Lord will be saved.” (Joel 2:32; Joel 3:5 LXX)
One cannot deny the Lord Jesus is YHWH (Romans 10:13) and be a Christian since a major component of the gospel that Paul preached included this important truth (Romans 10:8).
The same applies with Peter (recorded by Luke) in Acts 2:21 where believing the Lord Jesus is YHWH was also a major component of the gospel that Peter preached.