New Defender's Study Bible Notes
5:2 filthy lucre. “Filthy lucre” is one word in the Greek. Lucre, from a Latin word meaning “gain,” only becomes filthy when it corrupts the sincerity of Christian ministry.
5:4 chief Shepherd. See Isaiah 40:11. The Lord Jesus Christ is called the “good shepherd” in John 10:11, and “that great shepherd of the sheep” in Hebrews 13:20. Actually “pastor” is the same word as “shepherd” in the Greek.