The couplet was composed by Professor CHAN Yiu nam (陳耀南教授), written by Patrick Siu

曠野變良田。建院立堂屢偉猷。共賀羅公七秩。

牧聲成聖樂。慶生祝壽永神德。同歌上帝萬恩。(隸書)

仁者壽。(小篆)

上款: 羅院長德麟博士牧座榮壽

下款: 澳洲華人牧教神學院仝人恭賀

主內末肢 陳耀南敬撰  蕭燿漢謹書

主曆 二零一七年四月廿九日 (楷書)

 

Further readings:

https://en.wikipedia.org/wiki/Couplet_(Chinese_poetry)

http://www.gcpc.org.au/index.php/en/about-us/our-staff/pastors/