Paul is not primarily giving instructions on how Christians should live, but describing what God is like. First and foremost, these words describe God’s love, a love that is the fruit of God’s absolute self-sufficiency. The key to loving like this is to be “filled with all the fullness of God” (Eph. 3:19). God can love like this because of who he is, and if we are to love like this we need to be fully immersed in who he is.