מָא יְהֵיב לָךְ מַלְשִׁינָא וּמָא יוֹסִיף לָךְ אָכִיל קוּרְצִי לִישָׁנָא נְכִילְתָא.
1. What will it give you | מַה יִּתֵּן לְךָ – See Radak and Hoil Moshe that this sentence is addressed to the enemy and that the subject of the verbs "יִּתֵּן" and "יֹּסִיף" is the deceitful tongue. The author asks the trickster: "What benefit do you think to receive through your lying?" Cf. Rashi and Malbim that the statement is addressed to the tongue itself. If so, it is possible that Hashem is the unnamed subject: "What will He (Hashem) give you, what will He add to you [as punishment] O deceitful tongue?" [According to the Midrash, the psalmist asks the tongue, "What else can Hashem give you to prevent you from ill speech; after all He has already hidden you inside the mouth, setting up a barrier against you".]