Moses had to distrust his own ability before he could be God's messenger. He had to bow at the burning bush before he could speak burning words. It is sometimes good for witnesses to be "slow to speech," for then their words have more weight.
When we obey, when we "go for God," He will teach us what and when to speak. "Then the Lord put forth his hand, and touched my mouth," said the prophet Jeremiah. "And the Lord said unto me, Behold, I have put my words in thy mouth" (Jer. 1:9). And Jesus promised His disciples that when they would be called to testify before their persecutors He would give them "a mouth and wisdom, which all your adversaries shall not be able to gainsay nor resist" (Luke 21:15). If our speaking were by God's teaching, there would be less evil and more peace in the world. When we go for God we can speak for God.
I spoke a word, and no one heard;
I wrote a word, and no one cared,
Or seemed to heed; but after half a score of years
It blossomed in a fragrant deed.
Preachers and teachers all are we__
Sowers of seed unconsciously.
Our hearers are beyond our ken,
Yet all we give may come again
With usury of joy or pain. We never know
To what a little word may grow.
See to it then that all your seeds
Be such as brings forth noble deeds.
__John Oxenham
MEDITATION PRAYER: "Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O Lord, my strength, and my redeemer" (Ps. 19:14).