'Heat' in the Bible

So repent [change your inner self—your old way of thinking, regret past sins] and return [to God—seek His purpose for your life], so that your sins may be wiped away [blotted out, completely erased], so that times of refreshing may come from the presence of the Lord [restoring you like a cool wind on a hot day];

And when Paul had gathered a bundle of sticks, and laid them on the fire, there came a viper out of the heat, and fastened on his hand.