'Go in Peace' in the Bible

Then Eli answered and said, Go in peace: and the God of Israel grant thee thy petition that thou hast asked of him.

The LORD do so and much more to Jonathan: but if it please my father to do thee evil, then I will shew it thee, and send thee away, that thou mayest go in peace: and the LORD be with thee, as he hath been with my father.

And Jonathan said to David, Go in peace, forasmuch as we have sworn both of us in the name of the LORD, saying, The LORD be between me and thee, and between my seed and thy seed for ever. And he arose and departed: and Jonathan went into the city.

And so David received of her hand that she brought him, and said to her, "Go in peace to thine house. And see, I have obeyed thy voice and have received thee to grace."

Wherefore now return, and go in peace, that thou displease not the lords of the Philistines.