You also, as living stones, are built up as a spiritual house, to be a holy priesthood, to offer up spiritual sacrifices, acceptable to God through Jesus Christ.
Paul speaks of Christ crucified, to the Jews foolishness -- I mean to the Greeks foolishness, but to the Jews an offence; "but unto us which are saved the power of God" ( 1 Corinthians 1:18 ). And so he is a "rock of offence even to them which stumble."