1 Peter 5:2

Feed the flock of God, which is with you; exercising the overseer's office, not by constraint, but willingly; neither for the sake of sordid gain, but from good disposition;

2 Peter 2:3

And through covetousness, they will make merchandise of you, by fictitious tales: to whom the punishment threatened of old lingers not, and their destruction slumbers not.

2 Peter 2:15

having forsaken the right path, they have wandered, following in the way of Balaam, the son of Bosor, who loved the wages of iniquity,

Jude 1:11

Alas for them! for they have gone in the way of Cain, and have run evidently in the error of Balaam's hire, and have perished in the rebellion of Korah.

Treasury of Scripture Knowledge

Summary

Not because I desire a gift: but I desire fruit that may abound to your account.

Bible References

Because

1 Peter 5:2
Feed the flock of God, which is with you; exercising the overseer's office, not by constraint, but willingly; neither for the sake of sordid gain, but from good disposition;
2 Peter 2:3
And through covetousness, they will make merchandise of you, by fictitious tales: to whom the punishment threatened of old lingers not, and their destruction slumbers not.
Jude 1:11
Alas for them! for they have gone in the way of Cain, and have run evidently in the error of Balaam's hire, and have perished in the rebellion of Korah.