Who comes first? Spouse or children?

I've been told by family that your spouse always comes first because they were there before the children and they will be there afterwards. Your spouse is your partner. Your backbone. Your other half. Now this doesn't mean your children don't matter it just means that your spouse takes priority in arguments with children and decisions regarding both parties. 
What's your opinions? 
(Be kind in sharing your opinions as we all have different ones) 

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