Charles H. Spurgeon on Psalms 119:99

I have more understanding than all my teachers. Even where the preacher is godly, partaker of that grace himself, whereof he is an ambassador to others, it falls out oftentimes that greater measure of light and grace is communicated by his ministry to another than is given to himself; as Augustine first illuminated and converted by Ambrose did far excel, both in knowledge and spiritual grace, him that taught him. And herein God wonderfully shows his glory, that, whosoever be the instrument, he is the dispenser of light and glory, giving more by the instrument than it hath in itself. And this is so far from being to a godly teacher a matter of grief, that it is rather a matter of glory. William Cowper.