Paul wrote to Timothy, his successor in teaching the Gospel, with a very strict commandment:
1 Timothy 6:6-11
Yet true godliness with contentment is itself great wealth. After all, we brought nothing with us when we came into the world, and we can’t take anything with us when we leave it. So if we have enough food and clothing, let us be content. But people who long to be rich fall into temptation and are trapped by many foolish and harmful desires that plunge them into ruin and destruction. For the love of money is the root of all kinds of evil. And some people, craving money, have wandered from the true faith and pierced themselves with many sorrows. But you, Timothy, are a man of God; so run from all these evil things.
So who told you that it does not apply to modern day teachers of the Gospel? What is the Gospel's judgment against teachers, pastors, church elders who are greedy for money? Read for yourself:
2 Peter 2:1-3
But there were also false prophets in Israel, just as there will be false teachers among you. They will cleverly teach destructive heresies and even deny the Master who bought them. In this way, they will bring sudden destruction on themselves. Many will follow their evil teaching and shameful immorality. And because of these teachers, the way of truth will be slandered. In their greed they will make up clever lies to get hold of your money. But God condemned them long ago, and their destruction will not be delayed.
Jude 1:11
Now they are in for real trouble. They have followed Cain's example and have made the same mistake that Balaam did by caring only for money. They have also rebelled against God, just as Korah did. Because of all this, they will be destroyed.