Colossians 3:16 (NKJV)
Every Winter in Wisconsin there is snow. Sometimes there are snowstorms that bring a lot of snow. One thing that happens when there is the threat of a snowstorm is that people will go to the store and stock up on essential items and food. People do this because they think that there might be so much snow that it is not possible to get out again for several days. While some people do go overboard and buy more than is necessary, it is good to be stocked up with what you need to be prepared.
In Colossians 3:16, Paul wrote that we need to let God's Word dwell in us, richly. There are a couple of important things to notice here. First of all, it is up to us. Paul said we were to let this happen, we have to allow it; God's Word is not going to just jump into us out of the Bible sitting next to us on a table. Secondly, it is not just getting God's Word into us, but we are told to have it in us to a "rich" measure. We need more than just a little bit of God's Word, we need a lot of it.
We could say it this way, we need to stock up on God's Word. When there is potential for a problem situation, like a snowstorm or something else, people will stock up on what they need. We will always need to know God's Word, so we should be in a continuous mode of stocking up, filling up with God's Word, we don't want to wait until the problem comes. We need to be prepared for whatever might happen by stocking up on God's Word. We need to read it, study it, think about it, talk about it, and fill ourselves with the Word of God.