Read the dictionary definition of before. All definitions for this word.
1. earlier in time; previously
1. I had known her before
2. as I said before
3. he called me the day before but your call had come even earlier
4. her parents had died four years earlier
5. I mentioned that problem earlier
2. at or in the front
1. I see the lights of a town ahead
2. the road ahead is foggy
3. staring straight ahead
4. we couldn't see over the heads of the people in front
5. with the cross of Jesus marching on before
