The soul winner’s joy is:

-We have been saved, vs 28-30

Colossians 1:13-14

He has delivered us from the domain of darkness and transferred us to the kingdom of his beloved Son, in whom we have redemption, the forgiveness of sins.

Psalm 16:11

You make known to me the path of life; in your presence there is fullness of joy; at your right hand are pleasures forevermore.

-Obedience, vs 31-34

Luke 17:10

So you also, when you have done all that you were commanded, say, ‘We are unworthy servants; we have only done what was our duty.’”

Acts 5:29

But Peter and the apostles answered, “We must obey God rather than men.

-Salvation isn’t dependent on us, vs 35-38

1 Corinthians 3:6-7

I planted, Apollos watered, but God gave the growth. So neither he who plants nor he who waters is anything, but only God who gives the growth. 

-Seeing sinners repent, vs 38-42

Luke 15:7

Just so, I tell you, there will be more joy in heaven over one sinner who repents than over ninety-nine righteous persons who need no repentance.

-In glorifying God, vs 34, 39, 42

1 Corinthians 10:31

So, whether you eat or drink, or whatever you do, do all to the glory of God.