That which is born of the flesh is flesh. True repentance has a distinct reference to the Saviour. When we repent of sin, we must have one eye upon sin and another upon the cross, or it will be better still if we fix both our eyes upon Christ and see our transgressions only, in the light of His love. True sorrow for sin is eminently practical. No man may say he hates sin, if he lives in it.
Sincere repentance is continual.
Believers repent until their dying day. This dropping well is not intermittent. Every other sorrow yields to time, but this dear sorrow grows with our growth, and it is so sweet a bitter, that we thank God we are permitted to enjoy and to suffer it until we enter our eternal rest.