Why would I need to be sealed to a web of people in the temple, when I already belong to all who belong to Christ? All in Christ are sealed to Christ, and all in Christ are sealed to those sealed in Christ. All those who belong to Christ, belong to those who belong to Christ.
Paul taught not to boast in men, because all are ours in Christ Jesus:
“So let no one boast in men. For all things are yours, whether Paul or Apollos or Cephas or the world or life or death or the present or the future—all are yours, and you are Christ’s, and Christ is God’s.” (1 Corinthians 3:21-23)
This is profound.