Trinitarians call Jesus the Lord, and indeed He is.
Isaiah prophesied (Isaiah 2:11, 17) that there would come a day when ” Lord alone will be exalted.” If the Lord alone will be exalted, how can Trinitarians say Jesus is only the second Person of a trinity?
(No one can serve a Trinity, except with lip service. Repent, and serve Jesus Christ our Lord!”)
To learn more about Christ versus the Trinity, see: