Matthew Poole and continuators on 1 Peter 4:12

12 Beloved, think it not strange concerning the fiery trial which is to try you , as though some strange thing had happened unto you.

Be not offended or troubled at Persecution, as at a thing unusual or never heard of; it implies that they should reckon upon it before-hand, that they might not be surprised with it when it comes. The same word is used v. 4.

The heat or burning, whereby he means great afflictions, especially those that are for righteousness sake, as appears v. 14. which are often compared to Fire, as being alike painful and grievous to them, as Fire is to Men's Bodies; and because Men are tried by them as Metal are by Fire, Psal. 66.10. Isa. 48.10.

This he adds as the reason why they should not think strange of Persecutions, viz. Because they were sent by God, not for their destruction, but for the trial and exercise of their Graces.

Marginal references: 1 Cor. 3.13. Chap. 1.7.