נִדְב֣וֹת פִּ֭י רְצֵה־נָ֣א יְהוָ֑ה וּֽמִשְׁפָּטֶ֥יךָ לַמְּדֵֽנִי׃
Aceita, SENHOR, eu te rogo, as oferendas voluntárias da minha boca, e ensina-me as tuas ordenanças.
Rashi on Psalms
The freewill offering of my mouth Words of appeasement that my mouth offers You. Every נדבה, is an expression of appeasement.