Are you doubting? The beloved here are told to have mercy on you. For others, save them by "snatching them out of the fire". How? That answer is in this verse too: PERSEVERE.

Jude 1:17-23
But you must remember, beloved, the predictions of the apostles of our Lord Jesus Christ.
They said to you, “In the last time there will be scoffers, following their own ungodly passions.”
It is these who cause divisions, worldly people, devoid of the Spirit.
But you, beloved, building yourselves up in your most holy faith and praying in the Holy Spirit,
keep yourselves in the love of God, waiting for the mercy of our Lord Jesus Christ that leads to eternal life.
And have mercy on those who doubt;
save others by snatching them out of the fire; to others show mercy with fear, hating even the garment stained by the flesh.

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