I find a wonderful reminder in Psalm 20 that God uses ordinary means to do his work. The psalmist declares in v. 7 that "we trust in the name of the LORD" not in chariots and horses. Then, in v. 9, the psalmist pleads "O LORD, save the king! May he answer us when we call."

So, will the king answer and come to his people's aid, or will God? That false dichotomy is laid bare by this psalm - it is both. Sometimes God miraculously intervenes, other times he works through the ordinary processes of nature, politics, people, etc. In the end however, God is the sovereign, all-pervading cause and it is He who is to be trusted.