Numbers 20:8

20:8 “Take the staff and assemble the community, you and Aaron your brother, and then speak ¹  to the rock before their eyes. It will pour forth ²  its water, and you will bring water out of the rock for them, and so you will give the community and their beasts water to drink.”

¹ tn The verb is the Piel perfect with vav (ו) consecutive, following the two imperatives in the verse. Here is the focus of the instruction for Moses.

² tn Heb “give.” The verb is the perfect tense with vav (ו) consecutive, as are the next two in the verse. These are not now equal to the imperatives, but imperfects, showing the results of speaking to the rock: “speak…and it will…and so you will….”