“To give the hand” means to submit oneself. Absolutely it was Babylon that had just destroyed their national existence, but Jeremiah means that all…

We have given the hand. —The recognised phrase for submission (Jeremiah 1:15). “Assyria,” as in Jeremiah 2:18;[Reference Ezra …

He speaks here of the people's begging, meaning they sought bread from everywhere. "To give the hand" is explained in three ways: some say it means…

We have given our hand [to] the Egyptians
Either by way of supplication, to beg bread of them; or by way of covenant…

Is anyone afflicted? Let him pray; and let him in prayer pour out his complaint to God. The people of God do so here; they do not complain of evils…