Revelation 3 & 4

Rev-3
John writes to the angel of the church in Sardis,
He who has the seven spirits of God and the seven stars says to them, you can't be half this and half that.  You need to be right with God all the time.  To all that overcome will be in the Book of Life.  Some would say that's kinda hard, but really think about it.  If you aren't willing to go all out for God, why would He go all out for you.

Then John writes to the angel of the church in Philadelphia, letting them know with the Lord anything is possible and the Lord WILL prevail.

John then writes to the angel of the church in Laodicea the last of the seven churches, letting the church know that your faith can't be on one day and off the next.  You have to overcome and stand on your faith.  Put your trust in the Lord all the time.  Not just when it suits you.


Rev-4
After John addressed the seven churches with instruction from the Lord, John was in the spirit and was in heaven.  How awesome that had to be.  Everyone worshiping the Lord and seeing the 24 elders.