CHARLESTON, S.C. — Each morning they flowed into Courtroom Six, escorted by federal officials from a holding room reserved for survivors and families of the victims. The accused, Dylann S. Roof, never turned from the end of the defense table to acknowledge the parents, widows and widowers, children, grandchildren and fellow congregants of the nine African-Americans he confessed to killing in June 2015 at Emanuel African Methodist Episcopal Church.

Felicia Sanders, who survived the rampage but lost her son and her aunt, watched from the first of six rows of wooden benches, along with her husband, Tyrone. The Rev. Eric S. C. Manning, who now inhabits the office once occupied by the church’s pastor, the Rev. Clementa C. Pinckney, who was among those killed, sat one row back. The Rev. Anthony B. Thompson, whose wife, Myra, led the evening Bible study that Mr. Roof joined, always took his place in the fifth row, along with John Pinckney, the former pastor’s father.

Until the jury returned a guilty verdict on Thursday afternoon, family members stoically endured a week of tormenting testimony in United States District Court, where Mr. Roof, 22, faced 33 counts. Many will be back on Jan. 3 when the same jury considers whether to sentence Mr. Roof to death.

On Thursday morning, there were firm hugs between family members outside the courtroom after a prosecutor delivered a stirring closing argument, illustrated by gruesome crime scene photographs. On Wednesday, they heard from a medical examiner about the more than 60 wounds inflicted by his Winchester hollow-point bullets. On Tuesday, they watched three unnerving videos that Mr. Roof filmed of himself taking backyard target practice with the murder weapon in a two-handed grip.