Matthew 7:13-14 (ESV)
13 “Enter by the narrow gate. For the gate is wide and the way is easy that leads to destruction, and those who enter by it are many. 14 For the gate is narrow and the way is hard that leads to life, and those who find it are few.

Acts 16:6-30
6 Next Paul and Silas traveled through the area of Phrygia and Galatia, because the Holy Spirit had prevented them from preaching the word in the province of Asia at that time. 7 Then coming to the borders of Mysia, they headed north for the province of Bithynia, but again the Spirit of Jesus did not allow them to go there.
9 That night Paul had a vision: A man from Macedonia in northern Greece was standing there, pleading with him, “Come over to Macedonia and help us!” 10 So we decided to leave for Macedonia at once, having concluded that God was calling us to preach the Good News there.
Paul and Silas in Prison
16 One day as we were going down to the place of prayer, we met a slave girl who had a spirit that enabled her to tell the future. She earned a lot of money for her masters by telling fortunes. 17 She followed Paul and the rest of us, shouting, “These men are servants of the Most High God, and they have come to tell you how to be saved.”
18 This went on day after day until Paul got so exasperated that he turned and said to the demon within her, “I command you in the name of Jesus Christ to come out of her.” And instantly it left her.
19 Her masters’ hopes of wealth were now shattered, so they grabbed Paul and Silas and dragged them before the authorities at the marketplace.
22 A mob quickly formed against Paul and Silas, and the city officials ordered them stripped and beaten with wooden rods. 23 They were severely beaten, and then they were thrown into prison. The jailer was ordered to make sure they didn’t escape. 24 So the jailer put them into the inner dungeon and clamped their feet in the stocks.
25 Around midnight Paul and Silas were praying and singing hymns to God, and the other prisoners were listening. 26 Suddenly, there was a massive earthquake, and the prison was shaken to its foundations. All the doors immediately flew open, and the chains of every prisoner fell off! 27 The jailer woke up to see the prison doors wide open. He assumed the prisoners had escaped, so he drew his sword to kill himself. 28 But Paul shouted to him, “Stop! Don’t kill yourself! We are all here!”
29 The jailer called for lights and ran to the dungeon and fell down trembling before Paul and Silas. 30 Then he brought them out and asked, “Sirs, what must I do to be saved?”