This Scripture is a proof of Christ's being the eternal Son of God - John Gill

"Who hath ascended up into heaven, or descended? who hath gathered the wind in his fists? who hath bound the waters in a garment? who hath established all the ends of the earth? what is his name, and what is his son's name, if thou canst tell?" (Proverbs 30:4)

"...though his name for a while was a secret, and he was only called the seed of the woman and of Abraham, Ge 3:15; yet he had many names given him under the Old Testament; as Shiloh, Immanuel, the Wonderful, Counsellor, the mighty God, the everlasting Father, and Prince of peace; the Lord our righteousness, and the Man, the Branch: and under the New Testament, Jesus the Saviour, Christ the Anointed; the Head of the church, the Judge of the world; the Word of God, and King of kings, and Lord of lords. This Scripture is a proof of Christ's being the eternal Son of God; of his equality with his divine Father as such, their name and nature being alike ineffable; of his co-existence with his Father as such; and of his omnipresence and omnipotence, expressed by the phrases here used of ascending..."

They make their own works their saviours - John Gill

"There are some that cry up the power of man's freewill, and plead for the strength and purity of human, nature, and extol its excellencies and abilities; and it is no wonder that these see no need of Christ, either for themselves or others: hence preachers of this complexion leave Christ out of their ministry for the most part; and generally speaking, lessen the glory and dignity of his person, depreciate his offices, reject his righteousness, and deny his satisfaction and atonement: and such reckon themselves the favourites of heaven, and are ready to say, whom shall God delight to honour, but us, who are so pure and holy? they therefore trust in their own righteousness, and despise others, and submit not to the righteousness of Christ; they make their own works their saviours, and so neglect the great salvation by Christ. There are others that are sick, and are quite sick of themselves; they see the impurity of their nature, how unsound and unhealthful they are; that from the crown of the head to the sole of the foot, there is no soundness in them, nothing but wounds, bruises, and putrefying sores: their loins are filled with the loathsome disease of sin; they are sensible of their inability to cure themselves, and that no mere creature can help them; and that all besides Christ, are physicians of no value: and therefore they apply to him, whose blood is a balm for every wound, and a medicine for every sickness and disease, and which cleanses from all sin: and whereas such, and such only, see their need of Christ as a physician, these only does he attend under this character." -John Gill on Mark 2:17