Thought precedes action as lightning precedes thunder. (Heinrich Heine, 19th century German author)
Lightning and thunder are phenomena of nature that are both fascinating and frightening. Lightning comes first, traveling at the speed of light, then comes the thunder because sound travels much more slowly. That phenomenon is constant. Heine uses this scientific reality to emphasize the importance of planning (thinking) before you take action.
Commit to the Lord whatever you do, and he will establish your plans. (Proverbs 16:3)