How do those who hold Jesus = God in the Trinitarian sense account for Paul's reticence to state this clearly and consistently?

At the end of his letter to the Ephesians, St. Paul says (Ephesians 6:19-20) > Pray also for me, that whenever I open my mouth, words may be given me > so that I will **boldly** make known the mystery of the gospel, 20 for > which I am an ambassador in chains. Pray that I may proclaim it > **fearlessly**, as I should. Proclaiming boldly and fearlessly the Gospel is a priority for Paul. Paul in Acts is, indeed, described as speaking **boldly** (Acts 28:31). Yet when it comes to a belief that certain Trinitarians hold is **essential to salvation**, namely, that Jesus is God in the Trinitarian sense (as opposed to Jesus = God in the sense of agency, as Moses in Exodus was or the judges in Psalm 82 were), we don't seem to find any clear and consistent articulation of this in Paul's voluminous writing. Perhaps the closest is Philippians 2:6-8, which is semantically unclear, or Romans 9:5, which is grammatically ambiguous. This can be contrasted with Paul's views that Jesus = the Christ (repeated clearly and ad nauseam throughout his writings and in Acts) or that Jesus was crucified (ditto). According to those who hold Jesus is God in the Trinitarian sense *and* that this belief is crucial to the Gospel message, why does St. Paul not clearly and consistently articulate this in his writings (or does he)?