It seems that the 3 pointers Tong used to give were not recorded by me. And since last Sunday School's topic is on the Will of God, I should really write this down which was way overdue.
The 3 verses that Tong used to discern if one is called by God full time ministry (Thanks to this source for helping me recollect the verses):
Philippians 2:13 - God placed the burden in our hearts.
Colossians 3:15 - Having no peace in Christ in our status quo.
Hebrews 12:6 - God's final discipline comes to those who's still trying to escape.
Of course, I may not interpret this as "FULL TIME" ministry. Though I can agree it tends to lean towards "FULL TIME". Because of that, it is important one should not find excuse to be part time, especially as a citizen of a country where the living standards already could afford such. I'm no citizen of this country, so I do not see this apply to me. I am mere pilgrim even in U.S. contrasting the pilgrim citizens here. However, I also do not liken myself to David Tong's definition of pilgrim, that somehow I should go back to Malaysia/Indonesia to serve. For David Tong's definition of pilgrimage, I view it from the aspect of being a Chinese. Thus it is culturally, not geographically.