Rivett died on July 8 in Marion, Ill.
The event, organized by the Coalition for Life–St. Louis, saw its largest turnout ever in 2020.
Kollmann, who served as president of the LCMS Southern Illinois District from 1976 to 1994, died October 7 at the age of 88.
Registration is open for “Captive Souls … Mercy for All,” a Synodwide prison ministry conference set for Aug. 17–18 at the Hilton St. Louis Airport.
Others elected to leadership positions include the Rev. Mark Nebel of Red Bud, Ill., as first vice-president; the Rev. Benjamin Ball of Hamel, Ill., second vice-president; the Rev. Peter Ill of Millstadt, Ill., secretary; and Julie Johnson of Hamel, treasurer.
More than 30 prison-ministry workers from across the Synod take part in the LCMS Prison Ministry Conference, April 29-30 in Belleville, Ill.
Specialized pastoral ministers like the Rev. William F. Engfehr III serve people during a crisis, as they bear witness to the love of God in Christ Jesus.
The Rev. Timothy Scharr is re-elected as the district’s president during its Feb. 12-14 convention in O’Fallon, Ill.
LCMS Southern Illinois District President the Rev. Timothy Scharr proclaims for the Synod convention’s July 21 Matins service, “The Lord grows His Church where and when He will in those who hear the Gospel.”