Paul and his fellow disciples sailed from Philippi after the days of unleavened bread.  This does not mean that Paul was bound by Jewish laws and traditions, but was given as a reference to the time he was travelling.  In his epistle to the church at Corinth, Paul wrote that Christ is our passover and the Christian life is our  unleavened bread (1 Cor. 5:7,8).  We need to remember daily that Christ died so that if we believe in Him death will pass over us.  This does not mean that this body will not die, but it does mean that ultimately death will have no dominion over us.  It took five days sailing to reach Troas.  They rejoined those who had gone before them and stayed there for seven days.  When the disciples came together on the first day of the week to break bread, Paul preached to them.  They gathered on the first day of the week, the Christian Sabbath, for the same reason we do.  It was the day of the resurrection of Christ.  They gathered to strengthen one another, as should we today.  They broke bread, or observed the Lord's supper, a reminder of what He had done for all mankind.  Though Christ died for everyone, for those celebrating the Lord's supper, it should be a remembrance of what He did for them personally.  Christ can never be an impersonal Savior.  How often do we observe the Lord's supper with our mind on everything except His sacrifice for us.  I will confess I sometimes find myself thinking more about not spilling the cup than about His spilled blood.  We need to insure that nothing is in the way of our obedience to His will when we observe the Lord's supper.  They were now ready to hear Paul preach.  They weren't there to be entertained, but to hear the word of God proclaimed.  As I have mentioned before, and will mention again, church is not a place of entertainment, but a place of worshiping God.  When we gather in His name we are walking on Holy Ground, because He is with us.  Though we don't worship the building, we must show reverence to God when we gather to worship Him.  All the things of the world need to be set aside.