Have you ever heard of King Hezekiah in the Bible? When he was king, a powerful enemy army was marching toward Jerusalem, and Hezekiah knew they’d try to cut off the city’s water supply. So Hezekiah did something incredible. He had workers carve a tunnel through solid rock, from a spring called Gihon all the way into the city, so his people would still have water (2 Chronicles 32:1-4, 30).

Why go to all that trouble? Because in that dry, hot part of the world, water was needed to live. Wells and springs were the most protected things a city had. You didn’t leave your water source sitting out in the open where anybody could ruin it. You guarded it.

Solomon said in Proverbs that your heart is like a spring, and to guard it with everything you’ve got! Why would he say that? Because what flows out of you—your words, your choices, and your attitude—flows out from what’s in your heart.

So if you want good to come out, you have to guard your heart. That means paying attention to what you let in. What you watch. What you listen to. Who you spend time with. What you let yourself think about over and over. All of that is water flowing into your spring.

Think About It: If someone could see everything that flowed into your heart in a single day (every video, every song, every conversation, every thought you kept coming back to), would it be clean water or muddy water? Pay attention to it. Then pick one thing this week that you know muddies up your heart, and then guard against it. Hezekiah dug through solid rock to protect his water. What’s one thing worth protecting yours from?