Psalm 31:18 calls for lying lips to be silenced — directly parallel to the slander against a brother condemned in Psalm 50:20.

Psalm 101:5 explicitly condemns slander of a neighbor and promises destruction, reinforcing the sin in Psalm 50:20.

Leviticus 19:16 explicitly forbids slander among your people, directly paralleling the sin of speaking against a brother in Psalm 50:20.

Proverbs 10:18 calls the slanderer a fool, echoing the condemnation of speaking against a brother in Psalm 50:20.

Revelation 12:10 identifies Satan as the accuser of the brethren, the ultimate source of the slander condemned in Psalm 50:20.

Jeremiah 6:28 describes the people as going about with slanders, directly matching the sin of speaking against a brother in Psalm 50:20.

Ezekiel 22:9 lists slander among Jerusalem's sins, echoing the same accusation against the wicked in Psalm 50:20.

Matthew 5:11 blesses those falsely slandered for Christ — contrasting the victim's blessing with the perpetrator's condemnation here.

Ephesians 4:31 commands believers to put away slander, directly applying the OT condemnation to the church.

1 Timothy 3:11 instructs women not to be slanderers, a specific application of the sin condemned in Psalm 50:20.

Titus 2:3 warns older women against slander, aligning with the sin of speaking against a brother in Psalm 50:20.