Luke 5:27 (NKJV)
“See how great a love the Father has bestowed upon us, that we should be called children of God; and such we are. For this reason the world does not know us, because it did not know Him.” 1 John 3:1 (NASB)
To be a child of God is the greatest blessing a person can have in this life. We are all God’s children physically, through creation, but only those who have been born again by accepting Jesus as Savior are God’s spiritual children. John affirms this in his Gospel (John 1:12-13).
The religious leaders of Jesus’ day worshiped God, but they had no concept of Him as a personal, intimate Father, who is deeply concerned for each and every individual. To them, God cared more about proper ritualistic observance than He did for sinners who had gone astray. Jesus, particularly in the parable of the prodigal son, taught otherwise.
There is a persistent cry in the world today for recognition of the brotherhood of man, but there can be no brotherhood of man without the fatherhood of God. The problem, as 1 John 3:1 indicates, is that the world does not accept or believe the fact that we can become children of God only through Jesus. The world rejected Jesus and continues for the most part to do so. The world therefore rejects our witness to Him.
“If the world hates you, you know that it has hated Me before it hated you. If you were of the world, the world would love its own; but because you are not of the world, but I chose you out of the world, because of this the world hates you. Remember the word that I said to you, ‘A slave is not greater than his master.’ If they persecuted Me, they will also persecute you; if they kept My word, they will keep yours also.” John 15:18-20 (NASB)