come before

US /kʌm bɪˈfɔːr/
UK /kʌm bɪˈfɔːr/
"come before" picture
1.

to be more important than something else

:
Safety should always come before speed.
His family will always come before his career.
2.

to happen or exist earlier than something else

:
The invention of the wheel came before written language.
In the alphabet, 'B' comes before 'C'.