I don't see the connection between persevere and preserve. Perhaps you could clarify.
persevere v to persist in spite of difficulties.
preserve v to process food (as by canning or pickling) to prevent spoilage.
God's Grace preserves us to allow us to persevere. Scripture speaks to us being sealed
Eph 1:13 In whom ye also [trusted], after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
Eph 4:30 And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption.
Preserved (I have to seal those jars.....or they will not last the winter..they will be spoiled. The Holy Spirit seals us to allow us to last through our season here)
By virture of that preservation they can by Gods grace overcome
Rev 12:11 And they overcame him by the blood of the Lamb, and by the word of their testimony: and they loved not their lives unto the death.(perseverence)