Trees in cold climates prepare for winter through a process called “hardening.” Water drains from cells so they won’t freeze, expand, and burst the tree. The water that remains between the cells is too pure for ice crystals to attach. Its temperature may now drop to forty degrees below zero without cracking the tree. Trees harden at the same time each year because they take their cues from the fixed calendar of shortening days. They don't stake their lives on the weather, which may be unseasonably mild. They trust the sun, their one sure thing.
The Son who made
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