The law ought to be obeyed.

Literal

Law [dat-には], obey-[should-べきだ]

The topicalized には ('as for obeying the law') fronts the dative argument. ~べき + だ gives the moral obligation. The active 従う with the everyday だ, ending after a comma for emphasis, gives a conversational ring rather than the constitutional flavor a passive + である construction would carry.