The LORD is exalted and praised because of his majesty.
In the year that king Uzziah died I saw also the Lord sitting upon a throne, high and lifted up, and his train filled the temple. Above it stood the seraphims: each one had six wings; with twain he covered his face, and with twain he covered his feet, and with twain he did fly. And one cried unto another, and said, Holy, holy, holy, is the LORD of hosts: the whole earth is full of his glory. Isaiah 6:1-3
When God is seen for his majesty, we see ourselves as miserable wretches.
And the posts of the door moved at the voice of him that cried, and the house was filled with smoke. Then said I, Woe is me! for I am undone; because I am a man of unclean lips, and I dwell in the midst of a people of unclean lips: for mine eyes have seen the King, the LORD of hosts. Isaiah 6:4-5
When we see our misery compared to the Lord’s majesty, God shows us mercy.
Then flew one of the seraphims unto me, having a live coal in his hand, which he had taken with the tongs from off the altar: And he laid it upon my mouth, and said, Lo, this hath touched thy lips; and thine iniquity is taken away, and thy sin purged. Isaiah 6:6-7
In gratitude for God’s mercy, we volunteer for the ministry.
Also I heard the voice of the Lord, saying, Whom shall I send, and who will go for us? Then said I, Here am I; send me. And he said, Go, and tell this people, Hear ye indeed, but understand not; and see ye indeed, but perceive not. Make the heart of this people fat, and make their ears heavy, and shut their eyes; lest they see with their eyes, and hear with their ears, and understand with their heart, and convert, and be healed. Then said I, Lord, how long? And he answered, Until the cities be wasted without inhabitant, and the houses without man, and the land be utterly desolate, And the LORD have removed men far away, and there be a great forsaking in the midst of the land. But yet in it shall be a tenth, and it shall return, and shall be eaten: as a teil tree, and as an oak, whose substance is in them, when they cast their leaves: so the holy seed shall be the substance thereof. Isaiah 6:8-13
So often we are told to be witnesses because it is our duty. After all, God commanded it and therefore we should do it. While that is true – we are commanded to go, Isaiah 6 makes it clear the motivation for going is gratitude, not guilt. When we use duty or guilt as motivators, we are just getting people to conform on the outside. When we present God’s beautiful majesty and get people to see their misery thus calling out for God’s mercy, they are being changed from the inside. When God is exalted and we are cast down, we cannot do anything but go and tell others of God’s great mercy.
God’s majesty leads to our misery leads to God’s mercy leads to our ministering to others.