Sung. Literally, “sing.” The narrative is told in the dramatic present tense (cf. on ch. 13:11).
The throne. The throne has earlier been introduced (ch. 4:2).
Before the four beasts. See on ch. 4:6.
Elders. See on ch. 4:4.
No man could learn. The experience is of such a personal nature that only those who pass through it can appreciate its significance. To them the song is a treasured and comprehensive summation of the experiences through which they have passed in the closing stages of the conflict between good and evil.
Redeemed. Gr. agorazō, “to buy,” “to purchase.” The word is translated “buy” in chs. 3:18; 18:11. Compare the phrases “redeemed us to God” (ch. 5:9), “redeemed from among men” (ch. 14:4). Compare on Rom. 3:24; 1 Cor. 6:20.