In the video on Jeremiah 10:11b we came across a relative clause (underlined in red) indicated by the relative particle (A). The relative clause in Biblical Aramaic is similar to the relative clause in Biblical Hebrew. In Biblical Hebrew, the relative clause can follow a definite or indefinite antecedent. The
Other examples of the vav+perfect showing purpose include Gen. 35:5; 1 Sam 25:21; 1 Kings 2:31; 13:3.
For more on the “missing” dagesh lene, see Gesenius-Kautzsch §21.
For more info on the dagesh in the lamed preposition see Gesenius’ grammar §20c-f.