"Then he went upstairs again and broke bread and ate. After talking until daylight, he left." NIV translation
Wouldn't you love to have miracles (like the young man being brought back to life) be almost routine? The simple fact of the matter is that God wants to do amazing things through His people but it requires faith on our part to ask for the amazing things with the expectation that they are coming. That's what Paul did and then he simply went back to the preaching. Remember that he was planning to travel the next day but he stayed all night and preached the Word. How many people do you know that would do that instead of saying that they had to get their rest and turning in for the night? God used Paul in a mighty way because he completely sold out and simply followed the leading of the Holy Spirit. We can do the same!
"We went on ahead to the ship and sailed for Assos, where we were going to take Paul aboard. He had made this arrangement because he was going there on foot." NIV translation
We do not know why Paul walked the twenty miles from Troas to Assos. It is possible that he used it as a time of solitude and prayer to strengthen himself for the events to come in Jerusalem. It is likely that he also shared the gospel along the way.
"When he met us at Assos, we took him aboard and went on to Mitylene. The next day we set sail from there and arrived off Kios. The day after that we crossed over to Samos, and on the following day arrived at Miletus. Paul had decided to sail past Ephesus to avoid spending time in the province of Asia, for he was in a hurry to reach Jerusalem, if possible, by the day of Pentecost." NIV translation
This passage gives us the sense of urgency that Paul felt to get to Jerusalem. In spite of the hardship that he knew was coming, Paul was trying to get there by the day of Pentecost. This day of Pentecost is talking about the Jewish festival called Shavuot which means "weeks". This was a feast celebrating the giving of the Law on Mt. Sinai and was also the first day that men could bring the first fruits to the Temple in Jerusalem. Paul knew that his life was being poured out for the Lord and he expected the persecution that was to come in Jerusalem. Still, he was going to present himself in the Temple as a type of first fruits just as Jesus did.
A spring that has no water is not of any use and in fact cannot really be called a spring anymore. A storm usually has a bunch of noise and, when we hear the noise, we expect a lot of rain with the thunder and lightning.
Here, Peter compares these false teachers with a loud storm that only brings a mist and a spring that has ran dry.