TRUST 1 Corinthians 9:17

If I preach voluntarily, I have a reward; if not voluntarily, I am simply discharging the trust committed to me.

If I preach voluntarily, I have a reward 
1 Corinthians 3:8  The one who plants and the one who waters have one purpose, and they will each be rewarded according to their own labor.
1 Corinthians 3:14  If what has been built survives, the builder will receive a reward.

if not voluntarily, I am simply discharging the trust committed to me 
1 Corinthians 4:1  This, then, is how you ought to regard us: as servants of Christ and as those entrusted with the mysteries God has revealed.
Galatians 2:7-8  On the contrary, they recognized that I had been entrusted with the task of preaching the gospel to the uncircumcised, just as Peter had been to the circumcised. For God, who was at work in Peter as an apostle to the circumcised, was also at work in me as an apostle to the Gentiles.
Colossians 1:25-27  I have become its (the church's) servant by the commission God gave me to present to you the word of God in its fullness--the mystery that has been kept hidden for ages and generations, but is now disclosed to the Lord's people. To them God has chosen to make known among the Gentiles the glorious riches of this mystery, which is Christ in you, the hope of glory.

(parentheses are mine)

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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