2 Peter 2:2 describes how false teachers lead many astray and blaspheme the truth — the context for the judgment in verse 21.

Romans 7:12 affirms the commandment is holy, just, and good — echoes the 'holy commandment' in 2 Peter 2:21, emphasizing its goodness.

John 15:22 states that those who heard Jesus have no excuse for sin, paralleling the greater condemnation for those who knew the way and abandoned it.

Proverbs 12:28 promises life in the path of righteousness, contrasting the fate of those who turn from it in this verse.

John 9:41 says those who claim to see have no excuse for sin, just as knowing the way makes turning away even more culpable.

Ezekiel 3:20 directly depicts a righteous man turning from his righteousness — the same scenario as knowing the way then turning away.

Ezekiel 18:24 likewise describes a righteous man turning away to iniquity — strong thematic parallel to apostasy.

Zephaniah 1:6 identifies those who 'turned back from following the Lord' — directly parallels turning from the holy commandment.

Matthew 11:23 warns Capernaum of worse judgment for rejecting greater light, mirroring the principle that knowing the way increases accountability.

Matthew 11:24 says Sodom will fare better on judgment day than those who saw mighty works—same logic as it being worse for those who knew the way.

Matthew 21:32 also uses 'way of righteousness' — those who heard John's call but did not repent, paralleling those who knew the holy commandment yet turned away.

Luke 12:47 teaches that a servant who knows his master’s will and disobeys receives a severe beating—directly analogous to knowing the way then turning.

1 John 2:19 explains that apostates leave because they were never truly part of the church — similar to those who knew the way but never genuinely belonged.

In Numbers 14:4, the Israelites wanted to return to Egypt — a direct parallel to turning back from the way of righteousness after knowing it.

1 Timothy 1:13 shows Paul received mercy for ignorant sin, unlike these who knowingly turned from the truth.

Acts 1:16 describes Judas, who knew Christ yet betrayed him — a pattern for those who knew righteousness but turned back.

Proverbs 21:16 warns that wandering from understanding leads to death — directly parallels the fate of those who turn from righteousness.

Psalm 78:41 recounts Israel repeatedly tempting God — a pattern of rebellion parallel to turning from the way.

Ezra 9:14 asks if they should again break commandments — mirroring the return to sin after knowing the way.

Deuteronomy 5:32 commands not to turn aside from God's commands — the very warning that these apostates violated.

Numbers 15:31 describes despising God's word and being cut off — parallel to the severe consequence of turning from the holy commandment.

Psalm 125:5 speaks of those who 'turn aside to crooked ways' — echoes turning from the holy commandment.

Psalm 101:3 speaks of setting no wicked thing before eyes and hating those who fall away — relates to the apostasy condemned here.