'Go in Peace' in the Bible

Then Eli said to her, Go in peace: and may the God of Israel give you an answer to the prayer you have made to him.

May the Lord's punishment be on Jonathan, if it is my father's pleasure to do you evil and I do not give you word of it and send you away so that you may go in peace: and may the Lord be with you, as he has been with my father.

And Jonathan said to David, Go in peace, for we two have taken an oath, in the name of the Lord, saying, The Lord will be between me and you, and between my seed and your seed for ever. Then David went away, and Jonathan went into the town.

So now go back, and go in peace, so that you do not make the lords of the Philistines angry.