The God-given roles of husbands and wives within marriage are given to us here in this passage. Wives are to submit to their husbands in all things, because he is the head. Husbands are to love their wives as Christ loved the church - sacrificially, in order that his wife might be sanctified. It is indeed a huge challenge but one which gives opportunity for the grace of the gospel to be seen as this is worked out in marriage.
The believer likewise is to submit to Christ in all things because he has first loved us and given himself for us.