en_tn/rom/09/01.md

my conscience bearing witness with me in the Holy Spirit,

This phrase can be made into a separate sentence: "The Holy Spirit controls my conscience and confirms what I say."

that for me there is great sorrow and unceasing pain in my heart.

This can be a separate sentence. "I tell you that I grieve very greatly and deeply." If the person for whom Paul grieves needs to be stated, follow UDB.