As a little boy, I used to sing that little chorus, “Oh be careful little eyes what you see; little ears what you hear, little tongue what you say, little hands what you do, little feet where you go, and little heart what you believe.” Each stanza ends with “For the Father up above is looking down with love, so be careful.” I don’t know what inspired that little song, but it could have been Psalm 33. It reads in part, “The LORD looks down from heaven and sees the whole human race. From his throne he observes all who live on the earth. He made their hearts, so he understands everything they do.” In Psalm 139, David rejoiced that God knew everything about him. He wrote, “You know when I sit down or stand up. You know my thoughts even when I am far away. You see me when I travel and when I rest at home. … You know what I am going to say even before I say it, LORD.” He goes on to say, “How precious are your thoughts about me, O God. They cannot be numbered! I can’t even count them; they outnumber the grains of sand.” No wonder he says, “Such knowledge is too wonderful for me, too great for me to understand!” Since God’s knowledge of His children is coupled with His love, it fills us with joy and a great sense of security.