How to Look Up Someone's Wall Post on Facebook
Facebook allows you to post on the wall of your Facebook friends. You can also view your Facebook friends' wall posts. Facebook arranges all wall posts chronologically; it is not possible to search wall posts non-chronologically. Therefore, when looking up a friend's specific Facebook wall post, you will have to scroll through the friend's Facebook wall chronologically to find the specific post.
Log into your Facebook account.
Enter the name of the Facebook friend whose wall post you want to look up in the Facebook search bar. Alternatively, you can click on your friend's name if he has a post on your wall.
Select the Facebook friend to view that friend's Facebook wall.
Scroll down to find the specific post you want to look up.