1)
Why does it say "Yekadmuni b'Yom Edi"?
1.
Radak: They came early [to do evil to me] when I wandered to and fro, e.g. the Zifim.
2.
Malbim (Tehilim 18:19): When I wanted to escape the river, my enemies preceded me, to return me to the water. (Refer to 22:17:2:3.)
