Isaiah 6:8

8. Voice of the Lord The seraphs’ voices are hushed at the “voice” of Jehovah. From amid the Presence a great inquiry reaches the prophet’s ear. It is an inquiry which Jehovah is ever making; namely, for preachers and missionaries to a dying world. Whom shall I send, and who will go, are the divine queries. The first query implies that whoever goes should first receive his commission from Jehovah; he should be sent, and not go before he is sent. The second implies that he should freely will to go; he should heartily accord with his commission.

For us The plural may here, as elsewhere, be the plural of royalty, by which kings speak of themselves as we and us. Or, it may include with Jehovah himself his attendant court of seraphim. Or, as many eminent commentators, it may denote the trinity, indicated in the thrice “holy” uttered by the seraphim.

Here am I And this is the man who a few minutes ago was agonized with fear for his life because in his impurity he had seen God. Touched with the heavenly fire he now faces with bold joy the divine Presence, and announces himself ready for any message.