What? know ye not that your body is the temple of the Holy Ghost [which is] in you, which ye have of God, and ye are not your own? – 1 Corinthians 6:19

A vessel is drifting on the Atlantic hither and thither, and its end no man knoweth. It is derelict, deserted by all its crew; it is the property of no man; it is the prey of every storm, and the sport of every wind: rocks, quicksands, and shoals wait to destroy it: the ocean yearns to engulf it. It drifts onward to no man’s land, and no man will mourn its shipwreck. But mark well yonder barque in the Thames which its owner surveys with pleasure. In its attempt to reach the sea, it may run ashore, or come into collision with other vessels; or in a thousand ways suffer damage; but there is no fear, it will pass through the floating forest of “the Pool;” it will thread the winding channel, and reach the Nore because its owner will secure it pilotage, skillful and apt. How thankful you and I should be that we are not derelict today! We are not our own, not left on the wild waste of chance to be tossed to and fro by fortuitous circumstances; but there is a hand upon our helm; we have on board a pilot who owns us and will surely steer us into the Fair Havens of eternal rest…He that is his own master, has a fool and a tyrant to be his lord. No man ever yet governed himself after the will of the flesh but what he by degrees found the yoke heavy and the burden crushing…Today, when the Christian confesses that he is not his own, he does not wish that he were. He is married to the Savior; he has given himself up, body, soul, and spirit, to the blessed Bridegroom of his heart; it was the marriage-day of his true life when he became a Christian, and he looks back to it with joy and transport. Oh, it is a blissful thing not to be our own, so I shall not want arguments to prove that to which every gracious spirit gives a blissful consent. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1004.cfm