Soul Survivor Watford is encouraging anyone with information relating to the investigation into Mike Pilavachi to come forward.
In a statement, the church said it's of the "utmost importance" for people to know there are channels available to give information regarding the investigation.
"They will be listened to, their voices will be heard, and they will be given all the necessary support. Anything that needs to come into the light must come into the light," the statement said.
Mike Pilavachi, co-founder of Soul Survivor Watford and leader of the youth festival under the same name, is being investigated for "non-recent" safeguarding concerns.
Earlier this month, the Church of England National Safeguarding Team and the Diocese of St Albans, who are leading the investigation, confirmed it does not involve police and is not a "clergy disciplinary matter".
Acknowledging the news might have impacted people "far beyond" the Watford congregation, the church pointed people towards thirtyone:eight and Help Spaces' helplines, organisations which are specialised in dealing with safeguarding issues in a church context.
Last week, the charity watchdog for England and Wales said it was in communication with Soul Survivor Watford after receiving a safeguarding serious incident report from the church.
It's understood the report was submitted on 30th March 2023 on behalf of Soul Survivor Watford, Soul Survivor and Soul Survivor International.
No formal timeline regarding the investigation has been communicated.