Charles Ellicott Commentary Psalms 119:91

"They abide this day according to thine ordinances; For all things are thy servants." — Psalms 119:91 (ASV)

They (the heavens and the earth) continue to this day according to Your ordinances: for all (i.e., all creation) are Your servants. —In Hebrew the all, i.e., the universe. The parallelism is in this way preserved, while in the alternative, “as for Your judgments, Your,” etc., it is lost.