For. For [say they] mimicking the prophet as though he were teaching little children in. school.
must be: or, [hath been]. The verse then reads: "For it is zav lazav, zav lazav kav lakav, kav lakav ze'er sham, ze'er sham. "The Figures of speech: Epizeuxis and Paronomasia (App-6), for emphasis. It may be Englished by: "Law upon law, Saw upon saw".