The Lamb is Now The Lion Lamb

You must note that this Lamb is a Person “He”. He is the Lord Jesus. He is not dead, nor weak, but is all worthy. See ch 5:9. They sung a new song saying, “Thou art worthy.” This is the real reason for all worship in any Christian Church. Christians worship Christ because He is worthy of their honour. It is His worth that makes us worship Him.
So you must see that worth in the risen Christ. In heaven He is counted to be worth all worship and honour. This worth comes through in powerful terms when we consider Him as the Lion Lamb. These most opposite of creature attributes are conjoined only in the person of the glorified Christ.