“I have fought a good fight, I have finished my course, I have kept the faith; henceforth there is laid up for me a crown of righteousness, which the Lord, the righteous judge, shall give me at that day; and not to me only, but unto all them also that love His appearing.” (2 Tim 4:7-8)
AN assured hope, such as Paul expresses in 2 Timothy 4:6-8, is a true and Scriptural thing. I would lay it down fully and broadly, that a true Christian, a converted man, may reach that comfortable degree of faith in Christ, that in general he shall feel entirely confident as to the pardon and safety of his soul, — shall seldom be troubled with doubts, — seldom be distracted with hesitation, — seldom be distressed by anxious questionings, — and, in short, though vexed by many an inward conflict with sin, shall look forward to death without trembling, and to judgment without dismay.
The vast majority of the worldly oppose the doctrine of assurance. That they cannot receive it is certainly no marvel. But there are also some true believers who reject assurance, or shrink from it as a doctrine fraught with danger. They think it borders on presumption. They seem to think it a proper humility never to be confident, and to live in a certain degree of doubt. This is to be regretted, and does much harm.
Source: Monergism | J.C.Ryle