Matthew Poole and continuators on Revelation 3:5

5 He that overcometh, the same shall be clothed in white raiment , and I will not blot out his name out of the book of life , but I will confess his name before my Father, and before his Angels .

He that overcometh in the Spiritual Fight, shall be honoured as a Triumpher,

that is, I will give him Everlasting Life: The Phrase is an allusion to Men who use to keep Books, and in them the Names of Persons to whom they will shew kindness, The Book of Life, applied to God, signifieth his Eternal Predestination; or purpose to bring some to Heaven; out of which Book, though none can be blotted out, whose Name is once wrote in, yet those whose Names are in this Book, may be under some fears and apprehensions to the contrary. Christ assures them to the contrary, that they shall certainly be saved, but let them know that this assurance depends upon their perseverance; of which also some make this Phrase a Promise.

In the day of Judgment I will own them, and acknowledg them as mine before my Father and all the Angels, Mat. 10.32. Luke 12.8.

Marginal references: Phil. 4.3. Chap. 20.12. and 21.27.