He was elected to serve on the church’s highest administrative body, the Executive Committee, in 1962, where he began a four-year term as assistant general overseer. In 1966, the Church of God elected him to its top executive position. During the four-year tenure as general overseer which followed, he supervised the amalgamation into the denomination of the Bethel Church of Indonesia, which today accounts for 2.5 million members.
He served on the church's highest governing body in 1962 and became assistant general overseer. In 1966, he was elected to the top executive position within the Church of God. During his four-year tenure as general overseer, he oversaw the merging of the Bethel Church of Indonesia into the denomination, which now has 2.5 million members.