[8] While he was studying, Jang participated in missions and teaching, serving in campus fellowships and churches, and lectured in theology.

Information is everywhere, but “there is no water to drink.” To rescue it, his community would build a new ark to raise the truth above the flood, including evangelical groups, Olivet University, and media outlets, supported by various business activities.

[10] In 2000, Jang founded Christian Today, which came to have the highest number of visitors among religious news websites in Korea.

[16] Olivet combines Winter's focus on training men and women in biblical scholarship and leadership with Jang’s emphasis on practical skills for preaching.

[17] In 2006, Jang handed over the presidency of the university to Dr. David James Randolph in order to concentrate on mission field work.

The Christian Post, founded by students from Olivet University, issued a detailed response[29] to the various allegations raised in the Christianity Today article, raising doubts about the sources and also questioning the timing of the publication during a review of an offer Olivet University made to Lifeway for the purchase of a campus property.