# For the chief musician

"This is for the director of music to use in worship"

# set to the Shoshannim

This may refer to a style of music.

# Shepherd of Israel

Asaph is referring to God as the one who leads and protects Israel. 

# you who lead Joseph like a flock

"you who lead the descendants of Joseph as though they were a flock of sheep" 

# Joseph

Here Joseph represents the nation of Israel. 

# you who sit above the cherubim

"you who sit on your throne above the cherubim on the ark of the covenant" 

# shine on us

"give us light" or "show us the right way to live"