Some Background to Paul

Regarding:

ACTS 24:14

14 And when we were all fallen to the earth, I heard a voice speaking unto me, and saying in the Hebrew tongue, Saul, Saul, why persecutest thou me? it is hard for thee to kick against the pricks.

Compare:

PSALMS OF SOLOMON 16:4

4 He pricked me, as a horse is pricked, that I might serve Him,
My savior and helper at all times saved me.

A verse with which Saul, being at the time a Pharisee, may have been familiar.