Albert Barnes Commentary Ezekiel 29:7

"When they took hold of thee by thy hand, thou didst break, and didst rend all their shoulders; and when they leaned upon thee, thou brakest, and madest all their loins to be at a stand." — Ezekiel 29:7 (ASV)

So Egypt was continually proving to Israel, to Jehoiakim and to Zedekiah. The tenses are present, not past.

To be at a standstill - Others, “to totter.”