(a) By opening up to our minds the deep, sanctifying truths of
the Bible, and especially by revealing to us the character and
spirit of Jesus and His Apostles, and leading us to follow in
their footsteps--the footsteps of their faith and love and
unselfish devotion to God and man, even unto the laying down of
their lives.
(b) By the circumstances and surroundings of our daily life.
(c) By the counsel of others, especially of devout, and wise, and
experienced men and women of God.
(d) By deep inward conviction, which increases as we wait
upon Him in prayer and readiness to obey. It is by this sovereign
conviction that men are called to preach, to go to foreign fields
as missionaries, to devote their time, talents, money, and lives
to God's work for the bodies and souls of men.