And how do we go about holding fast? Even that is in and through the priestly work of the Lord Jesus on our behalf. Verse 15 beings with "for." We hold fast our confession "FOR we do not have a high priest who cannot sympathize with our weaknesses, but One who has been tempted in all things as we are, yet without sin."
Our blessed Jesus knows our frame. He knows we are but dust. He knows we are sinners in need of much mercy - that's why He came as our priest. He came to do for us that which we could not do for ourselves. He sympathizes with our weaknesses and not only does He "feel" for us and pat us on the back in the midst of our miserable state, He has actually done something about our miserable state that we might not remain there! Now that's a friend!! Now that's a Great High Priest! Now that's Jesus!
Matthew Henry writes: "Christ is a gracious high priest, merciful, compassionate, sympathizing with His people. He is touched with the feeling of our infirmities, not only that he might be able to satisfy for us, but to sympathize with us."
Christ was tempted in every way - just as we are. The great and grand difference? He was tempted and never sinned. We have a great priest, a gracious priest, and a sinless priest. It is due to the power, mercy, and perfection of this priest that we are able to come boldly to the throne of grace when we need help.
"Let us therefore draw near with confidence to the throne of grace, that we may receive mercy and may find grace to help in time of need." The "therefore" is there for us to look back to what has been declared about our high priest. Because He is great He is able to supply us with real and lasting answers in our time of need. Because He is merciful He is willing to both listen and lend aid. Because He is sinless His propitiatory act on our behalf was sufficient. O Christian, do you recognize the glory of your Great High Priest? Here we have the ticket of entry to the throne of grace held forth - Christ our Priest. Here we have the duty we are to be about at the throne of grace - seeking mercy, grace and help in our time of need.
I turn again to Mr. Henry, his words are a great encouragement.
Are you needy this day? Come boldly. Draw near with confidence. Flee to Christ, the great high priest, and find grace and help in your time of need!