1 John 3:5

Two more facts believers know highlight the seriousness of sin. Jesus Christ became incarnate to remove sin, and there was no sin in Him. This is a strong assertion of Jesus’ sinlessness (cf. 1 John 2:1; John 8:31-59; John 10:30; John 17:22; 1 Peter 2:22)

"Because Jesus was holy, and without sin, this can become the character of those who abide in him (cf. Hebrews 2:10 to Hebrews 4:16; Hebrews 5:9)." [Note: Ibid., p. 158.]

"The dominant thought here is not that of the self-sacrifice of Christ, but of His utter hostility to sin in every shape." [Note: Westcott, p. 103.]