The cast of characters around God’s throne is a bit unusual and take a bit of details to interpret.  But what is clear and needs no interpretation is why they are worshiping.  God is worthy of all praise, and, honor, and power, and glory.  The word worthy is simply giving worth to another.  It is similar to the worship or as some spell and pronounce it worthship.  Because of who God is and all that he has done, he is the object/focus of our worship.  The lamb is also mentioned to be on the throne in the center of these worshipers so he is equally worthy of praise.  And so we can praise God and Jesus.  But I hope you noticed in the message that the Holy Spirit (the seven blazing fires) is also in the center (literally in the eye) of the throne as well.  Therefore, he too should be the object of our praise and worship.  He too is divine and equal with God and Jesus.  When was the last time you praised and worshiped the Spirit?  Maybe we should give him equal treatment as well.