Question: Exodus 18:20:

> 
> **וְהִזְהַרְתָּ֣ה** אֶתְהֶ֔ם אֶת־הַחֻקִּ֖ים וְאֶת־הַתּוֹרֹ֑ת **וְהוֹדַעְתָּ֣**
>  לָהֶ֗ם אֶת־הַדֶּ֙רֶךְ֙ יֵ֣לְכוּ בָ֔הּ וְאֶת־הַֽמַּעֲשֶׂ֖ה אֲשֶׁ֥ר
>  יַעֲשֽׂוּן׃
> 
> 
> My translation - somewhat "exaggerated" to point the nuances, here:
> 
> 
> You shall **warn** them about the statutes and laws and **make them know** about the path that they should walk in, and the work that they should do.
> 
> 
> 

Why is a different verb (see the bolded words) used regarding each different area? It seems that there is some nuance in the meaning of the objects following each verb that necessitates a different verb.

Answer: 
The **second** verb-object is the simple amplification and expansion of nuance of the **first** verb-object. That is, both verb-objects are the main idea of their respective clauses. Thus the second verb-object (and what follows) modifies the first verb-object (and what follows).

According to the 19th Century mathematician and Hebraist [Dr. William Wickes](http://menachemmendel.net/blog/who-was-william-wickes/), the Hebrew Scriptures were written in verse dichotomy, which means that every verse appears in dyad form. In other words, the *second* half of every verse modifies the *first* half of every verse (with minor exceptions for example among verses containing genealogies). Wickes calls these verse divisions the logical and syntactical function of dichotomy by cantillation. For example, please click on the image below to enlarge, or **[view the source online](https://archive.org/stream/treatiseonaccent00wickuoft#page/n49/mode/2up)**.

[![enter image description here](https://i.stack.imgur.com/7qjWdm.png)](https://i.stack.imgur.com/hN5eB.png)

The following diagram provides my own schematic depiction of the logical and syntactical relationship of these Hebrew words and phrases according to their dichotomy. In other words, the cantillation marks provide the audible and visual cues regarding the logical and functional relationship between each of the words and phrases.

Please click to enlarge.

[![enter image description here](https://i.stack.imgur.com/SsN00m.png)](https://i.stack.imgur.com/8O8sL.png)

In summary, the **first** verb-object is the main thought of the verse. The **second** verb-object comprises the main thought of the second half of the verse. In other words, each of the two verb-objects is amplified by what follows in each respective half of each verse. But since the second major dichotomy modifies the first major dichotomy of the verse, the **second** verb-object is the logical and syntactical amplification of the **first** verb-object.
The usage of diffrent verbs in this posuk seems to be a reflection of [Synonymous Parallelism](https://en.wikipedia.org/wiki/Biblical_poetry#Parallelism) found in the Hebrew Bible in which each element of the second part of the verse or strophe are synonyms/explanations of the idea of its first part. 

You shall warn them (A)  

about the statutes (B)  

and laws (C)

make them know (A)  

about the path that they should walk in (B)  

and the work that they should do (C)