Paul tells us in 2 Timothy 3:12 that if it is the case that we wish to live a godly life, we will be persecuted. Paul is only repeating what Jesus said. Look at John 15:18, the world hates Christ, so it will hate those who follow Him. There are many more passages.
Bottom line? This journey we started to follow Christ is consistently, passionately, and fully resisted by the enemy of our Lord. Revelation 12:17 tells us that the dragon is committed to war against those who obey God and hold to the testimony of Christ.
So if you are following Christ. Suffering is assured.