“Besides the continual supplies of grace that constantly, according to the tenure of the covenant, are communicated unto believers, which keeps them that they thirst no more as to a total indigence, there is, moreover, a readiness in the Lord Christ to yield peculiar succour to the souls of His, according as their occasions shall require.
The apostle tells us that He is ‘a merciful High Priest,’ and ‘able’ (that is, ready, prepared, and willing) ‘to succour them that are tempted,’ (Heb. 2:18); and we are on that account invited to ‘come with boldness to the throne of grace, that we may obtain mercy, and find grace to help in time of need,’ (Heb. 4:16)—that is, grace sufficient, seasonable, suitable unto any especial trial or temptation that we may be exercised withal.
Our merciful High Priest is ready to give out this especial seasonable grace over and above those constant communications of supplies of the Spirit which we mentioned before.
Besides the never-failing springs of ordinary covenant grace, He hath also peculiar refreshing showers for times of drought; and this is exceedingly to the advantage of the saints for their preservation and growth in grace.”
–John Owen, “Indwelling Sin in Believers,” in The Works of John Owen, Volume 6: Temptation and Sin (ed. William H. Goold; Carlisle, PA: Banner of Truth, 1681/2009), 6: 288.