The juxtaposition of the OT and NT reading is phenomenal.
In Samuel, Israel wants to become just like all the other nations and have a man as King.
In Acts, the Lord has given a man as King - His Son. And by that King, He makes all the other nations to be just like His Israel, a member of His kingdom.
Oh, and uses the earthly pagan rulers to accomplish His will too in delivering Paul from evil.