יָדַ֣עְתִּי יְהוָ֔ה כִּ֛י לֹ֥א לָאָדָ֖ם דַּרְכּ֑וֹ לֹֽא־לְאִ֣ישׁ הֹלֵ֔ךְ וְהָכִ֖ין אֶֽת־צַעֲדֽוֹ׃
O LORD, I know that man’s way is not his own; It is not in man to direct his steps as he walketh. .
Rashi on Jeremiah
man’s way is not his For the evil inclination that You created in him leads him astray from the way. Another explanation is: I know, O Lord, that man’s way is not his; not every man has the power to make his way prosper, and if it were not for Your command, the enemy would have no power to destroy Your Temple.