בְּחֻקֹּתֶ֥יךָ אֶֽשְׁתַּעֲשָׁ֑ע לֹ֭א אֶשְׁכַּ֣ח דְּבָרֶֽךָ׃
I will delight myself in Thy statutes; I will not forget Thy word.
Rashi on Psalms
I shall occupy myself Heb. אשתעשע, I shall engage, like (Isa. 17:7): “man shall turn to his Maker”; (Exod. 5:9) “and let them not engage (ישעו) in useless things.”