Komentaryong Sumisipi para sa Mga Awit 110:2

“What is that in your hand?” And he said, “A staff,” etc. In these three signs, there are many opinions due to the question about them. What is the strength of one over the other, as it says, And it shall be, if they do not believe the voice of the first sign, etc. What seems most reasonable to me is that the first sign indicates that Israel was originally, in the days of the Patriarchs, in their full stature and authority, like this staff standing upright, symbolizing authority, as it is written The Lord will send the staff of your strength out of Zion, etc. (Psalms 110:2). But afterward, through their sins, they became like a snake. Just as the snake originally walked with an upright posture, but because it spoke slander against its Creator (Exodus Rabbah 3:12), it was lowered to crawl on the ground with its full height, so too Israel was initially upright, but because they adopted the behavior of the snake and had informers and slanderers among them, they became like dust to be trampled along with the venom of ground-crawling creatures. And when the cause of their lowliness is removed, they will return to their elevated status. This is what is meant by What is that in your hand? And he said, A staff. And He said, Cast it to the ground, and it became a snake. Through this, God gave him a sign about the Egyptian exile, its cause, and how Israel was compared in it to a snake.

Meaning dominion as in Tehelim 110:2 "rule over your enemies."

The meaning is “conquest.” Until it is subjugated to you. [An expression] similar to “conquer (רדה) in the midst of your enemies” (Tehillim 110:2), because the term ירידה (falling) does not refer to the town, meaning its people, but to its walls.