# because my flock has become plunder and food for all the beasts in the fields

"because all the beasts in the fields steal my flock and eat them"

# plunder

things that are stolen

# all the beasts in the fields

"all the wild animals in the fields". This refers to all the wild animals that eat sheep.

# because there was no shepherd

"because they did not have a shepherd"

# none of my shepherds sought my flock

"none of my shepherds tried to find my flock"

# guarded themselves

"shepherded themselves" or "fed and cared for themselves"

# did not shepherd my flock

"did not feed and care for my flock"