This is one of two functions which comprise the Lord’s present work on high for His people—His priesthood and His advocacy. Both have to do with intercession (Rom. 8:34), but in different ways:
His intercession as a Priest has to do with maintaining His people in the path of faith so that they might not fail (Heb. 7:25).
His intercession as an Advocate comes into operation if and when they do fail in the path of faith and are in need of being restored (Luke 22:32; 1 John 2:1-2).
As to the Lord’s priesthood, He intercedes to help us in the path. The effect of His intercessory work is that we are kept on track, and are thus saved from spiritual dangers in the way (Heb. 7: 25). As our High Priest, He sympathizes with our weaknesses and infirmities, but not with our sins (Heb. 2:17-18; 4:14-16).
Many have wondered why any of the Lord’s people fail when they have the Lord interceding for them so that they wouldn’t. They are perplexed because our failure in the path surely couldn’t be due to a fault in His high priestly work. R. F. Kingscote wrote to Mr. Darby asking him about this. He replied, “Intercession is a general term, used even of the Holy Ghost in us (Rom. viii); but priesthood (in Hebrews) is with God, for mercy and grace to help in time of need: advocacy is with the Father to restore communion when we have sinned. You do not have it for sins in Hebrews because the worshipper once purged has no more conscience of sins. This answers your first three questions, save the end of the third; ‘Why do we fail?’ It is because it is part of the government of God to have us responsibly exercised, though not without grace sufficient for us and strength made perfect in weakness. But if we forget our weakness and dependence, we forget the grace, too, and are in the way of a fall. See Peter’s case, the Lord did not ask that he might not be sifted; He wanted it. The evil is not in the fall, really grievous as that is, but in the state it manifests. God may allow it that we may learn this” (Letters, vol. 2, p. 274).
Thus, if our state is low and we are not hearing the Lord’s voice to us about it, He may allow us to learn dependence through a humbling failure. Thus, on certain occasions, He may cease to intercede for us in His normal way. With Peter, the Lord did not pray that he wouldn’t fall, but when he did, that his faith would not fail (Luke 22:32). His intercession led to Peter’s restoration. Thus, to gain from the Lord’s priestly intercession, we must be responsibly exercised to “come unto God by Him” (Heb. 7:25), which implies expressed dependence in prayer. If we habitually neglect this, we cannot expect to be kept.