says, “Guard your heart, for from it are the issues of life.” Our heart is deceitful (Jeremiah 17:9) and can often lead us astray. And as one Puritan writer put it, if we don’t guard our own heart, no one else can or will. This series highlights various truths and principles that can help us stay alert as we seek to love and serve God. “Let him who thinks he stands, take heed lest he fall.” (1 Corinthians 10:12)