מַ֭דּוּעַ קִדְּמ֣וּנִי בִרְכָּ֑יִם וּמַה־שָּׁ֝דַ֗יִם כִּ֣י אִינָֽק׃
Why did the knees receive me? And wherefore the breasts, that I should suck?
Rashi on Job
Why did knees receive me Why did the knees of my mother receive me before my death?
Rashi on Job
that I should suck [Why] was it decreed upon me to suck them? As he is speaking on the day of his birth, he mentions those subsequent events in the future tense.