But the soul that doeth aught presumptuously - Bold daring acts of transgression against the fullest evidence, and in despite of the Divine authority, admitted of no atonement; the person was to be cut off - to be excluded from God's people, and from all their privileges and blessings.

Probably the presumption mentioned here implied an utter contempt of the word and authority of God, springing from an idolatrous or atheistical mind. In such a case all repentance was precluded, because of the denial of the word and being of God. It is probably a case similar to that mentioned Hebrews 6:4-8 (note); Hebrews 10:26-31 (note); on which passages see the notes.

doeth ought

Numbers 9:13 But the man that is clean, and is not in a journey, and declines to keep the passover...

Numbers 14:44 But they presumed to go up to the hill top: nevertheless the ark of the covenant of the LORD, and Moses, departed not out of the camp.

Genesis 17:14 And the uncircumcised man child whose flesh of his foreskin is not circumcised, that soul shall be cut off from his people...

Exodus 21:14 But if a man come presumptuously on his neighbor, to slay him with guile; you shall take him from my altar, that he may die.

Leviticus 20:3,6,10 And I will set my face against that man, and will cut him off from among his people; because he has given of his seed to Molech...

Deuteronomy 1:43 So I spoke to you; and you would not hear, but rebelled against the commandment of the LORD, and went presumptuously up into the hill.

Deuteronomy 17:12 And the man that will do presumptuously, and will not listen to the priest that stands to minister there before the LORD your God...

Deuteronomy 29:19,20 And it come to pass, when he hears the words of this curse, that he bless himself in his heart, saying, I shall have peace...

Psalm 19:13 Keep back your servant also from presumptuous sins; let them not have dominion over me: then shall I be upright...

Matthew 12:32 And whoever speaks a word against the Son of man, it shall be forgiven him: but whoever speaks against the Holy Ghost...

Hebrews 10:26,29 For if we sin willfully after that we have received the knowledge of the truth, there remains no more sacrifice for sins...

2 Peter 2:10 But chiefly them that walk after the flesh in the lust of uncleanness, and despise government. Presumptuous are they, self-willed...

presumptuously. Heb. with an high hand. That is, bold, daring, deliberate acts of transgression against the fullest evidence, and in despite of the Divine authority. Such conduct 'reproacheth the Lord,' as if his commands were needless, unreasonable, and inimical to the happiness of man; his favour were not desirable, or his wrath not to be feared; in short, as if it were more advantageous to rebel against him than to serve him. Such acts admitted of no atonement; the person was condemned to bear his own iniquity, and to be cut off. reproacheth.

Psalm 69:9 For the zeal of your house has eaten me up; and the reproaches of them that reproached you are fallen on me.

Psalm 74:18,22 Remember this, that the enemy has reproached, O LORD, and that the foolish people have blasphemed your name...

Psalm 79:12 And render to our neighbors sevenfold into their bosom their reproach, with which they have reproached you, O Lord.

Psalm 89:51 With which your enemies have reproached, O LORD; with which they have reproached the footsteps of your anointed.

Proverbs 14:31 He that oppresses the poor reproaches his Maker: but he that honors him has mercy on the poor.

Isaiah 37:23,24 Whom have you reproached and blasphemed? and against whom have you exalted your voice, and lifted up your eyes on high...

The Call of Isaiah
The long reign of Uzziah [also known as Azariah] in the land of Judah and Benjamin was characterized by a prosperity greater than that of any other ruler since the death of Solomon, nearly two centuries before. For many years the king ruled with discretion. Under the blessing of Heaven his armies regained some of the territory that had been lost in former years. Cities were rebuilt and fortified, and the position of the nation among the surrounding peoples was greatly strengthened. Commerce revived, …
Ellen Gould White—The Story of Prophets and Kings

Numbers
Like the last part of Exodus, and the whole of Leviticus, the first part of Numbers, i.-x. 28--so called,[1] rather inappropriately, from the census in i., iii., (iv.), xxvi.--is unmistakably priestly in its interests and language. Beginning with a census of the men of war (i.) and the order of the camp (ii.), it devotes specific attention to the Levites, their numbers and duties (iii., iv.). Then follow laws for the exclusion of the unclean, v. 1-4, for determining the manner and amount of restitution …
John Edgar McFadyen—Introduction to the Old Testament