The message of God is: That Jesus Christ came as God (Deity) in the flesh and humbled Himself to die (a substitute) in our place as a sinless, perfect, and finished sacrifice, and through His blood to pay the penalty (redemption) of our sin and to satisfy (propitiate) the wrath of God upon sin. He rose from the dead in the (resurrection) power of the Holy Spirit to declare (impute) His righteousness to those who will believe and trust Him as Lord and Saviour. His offer is eternal life to sinners who repent and have faith in who He is and what He did.
666 is the number of the beast that would make 555 the number for mercy.
Genesis 15:13 And he said unto Abram, Know of a surety that thy seed shall be a stranger in a land that is not theirs, and shall serve them; and they shall afflict them four hundred years;