The New Testament uses the phrase child of God or children of God several times. First John 3:10 explains what it means to be a child of God: “This is how we know who the children of God are and who the children of the devil are: Anyone who does not do what is right is not God’s child, nor is anyone who does not love their brother and sister.” John is not referring here to legalists who rigidly work to earn God’s favor (Titus 3:5). He is describing the life of someone who has truly received Jesus Christ as Lord and Savior. The life of a child of God will be radically different from the life of an unbeliever. A child of God has a desire to live in a way that pleases the heavenly Father (1 Corinthians 10:31), a life characterized by love.