NET
54 Now when this perishable puts on the imperishable, and this mortal puts on immortality, then the saying that is written will happen, “Death has been swallowed up in victory.”
Darby
54 But when this corruptible shall have put on incorruptibility, and this mortal shall have put on immortality, then shall come to pass the word written: Death has been swallowed up in victory.
KJV
54 So when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory.