Psalms 1 2
He is happy when he obeys the Law of the Lord. He thinks about God's Law during the day and at night.
Compare with other 3 random translations
LSV Psalms 1:2But his delight is in the Law of YHWH, and in His law he meditates by day and by night:
WEB Psalms 1:2but his delight is in Yahweh’s law. On his law he meditates day and night.
NIV Psalms 1:2but whose delight is in the law of the Lord, and who meditates on his law day and night.