And when those beasts give glory and honour and thanks to him that sat on the throne, who liveth for ever and ever,
The ground of praise is God's eternity, power, and glory manifested in creating all things for His pleasure. Creation is the foundation of all God's other acts of power, wisdom, love, and therefore forms the first theme of thanksgivings. The four living creatures take the lead of the 24 elders, both in this anthem and that new song which follows, on the ground of their redemption (Revelation 5:8-10).
When - i:e., whensoever. A simultaneous giving of glory by the living creatures and the elders.
Give. 'Shall give' in A; but B 'Aleph (') х doosousin (G1325)], 'shall have given.'
Forever and ever - Greek, 'unto the ages of the ages.'