Jeremiah 40:4
And now, behold, I loose thee this day from the chains which were upon thine hand. If it seem good unto thee to come with me into Babylon, come; and I will look well unto thee: but if it seem ill unto thee to come with me into Babylon, forbear: behold, all the land is before thee: whither it seemeth good and convenient for thee to go, thither go.
In chronological order the verse follows Jeremiah 39:1-14 and describes what happened after Jerusalem fell. The Babylonian commander Nebuzaradan loosed Jeremiah from the chains that were upon his hands. He was given the choice to come with him into Babylon, where he would be looked well unto and kept under care and protection, but if it seemed ill to him to come, he was to forbear. All the land was set before him, and he might go wherever seemed good and convenient to him.
The verse stands at the beginning of the closing chapters of the book. Those closing chapters run through Lamentations 2. They record the personal experiences of Jeremiah the weeping prophet, including his going into Egypt.