Submission to Christ's lordship is central in Christianity. It's in the Bible, Luke 14:27, TLB. "And no one can be My disciple who does not carry his own cross and follow Me."
Submission is a key to harmony in Christian marriages. It's in the Bible, I Corinthians 11:3, TLB. "But there is one matter I want to remind you about: that a wife is responsible to her husband, her husband is responsible to Christ, and Christ is responsible to God."
Biblical submission is a mark of equality rather than inequality and is based on love. It's in the Bible, Ephesians 5:21, TLB. "Honor Christ by submitting to each other."