The Ministerial Obligation is provided in the PCA Handbook for Presbytery Clerks, year after year. All teaching elders must sign the same Confessional Subscription (BCO 13-7) corresponding to the same ordination vows (BCO 21-5) in order to be ordained, and their presbyteries must retain these contracts on file. https://www.pcaac.org/wp-content/uploads/2023/01/2023-Presbytery-Clerks-Handbook.pdf