Revelation 4:9

When the living creatures shall give (otan dwsousin ta zwa). Indefinite temporal clause with otan and the future active indicative (dwsousin) rather than the more common second aorist active subjunctive (dwsin) with the notion of repetition rather than unbroken continuance, "whenever they give." The giving of praise and glory to God by the four living creatures (representatives of nature) is met by corresponding worship by the redeemed (the four and twenty elders). "Created life adores the Uncreated" (Swete), "to the one living for ages of ages."