Again with holiness! Because the Spirit lives in us we are the temple of God (1 Corinthians 3:16-23.) St. Paul says "God's temple is holy and you are that temple." He's not asking us to make ourselves holy.
Sacrifice means to make holy. In his dying and rising Jesus sacrifices himself to God. He makes his and our human nature holy. Paul concludes, "You belong to Christ and Christ belongs to God."