[38:4] 1 tn The construction is the infinitive construct in a temporal clause, using the preposition and the subjective genitive suffix.
[38:4] 2 tn The verb is the imperative; it has no object “me” in the text.
[38:5] 3 tn The particle כּ (ki) is taken here for a conditional clause, “if you know” (see GKC 498 §159.dd). Others take it as “surely” with a biting irony.