A verse some use to say Jesus was not without sin

I came across an actual heretic (who is eager to teach his heresies) named Roy Potter. He usually just talks about politics, but he often gives lectures on biblical subject matter, and he is a pure blood drinker. He says he's a former Mormon, but he doesn't have the bad doctrine out of his system to any degree.

He was saying Jesus sinned during his life, and he cited Matthew 19:16-17.

16 And, behold, one came and said unto him, Good Master, what good thing shall I do, that I may have eternal life? 17 And he said unto him, Why callest thou me good? there is none good but one, that is, God: but if thou wilt enter into life, keep the commandments.

There's a similar passage in Mark 10:17-18.

This article does a good job of explaining the passage.

Basically, Jesus is assuming the questioner thinks of Him only as a teacher and not God Himself, the Second Person of the Trinity. He wants him to see that no man is good, but all have sinned and fallen short of the glory of God.

As for Jesus being without sin (though tempted like all human beings), Jesus came to fulfill what the first Adam failed to fulfill, following God's command/law which was elaborated on Sinai. The article lists several verses where Jesus is said to be without sin (but the heretic conveniently doesn't recognize the Bible to be without error).

Hebrews 4:15 For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin.

2 Corinthians 5:21 For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.

1 Peter 2:21 For even hereunto were ye called: because Christ also suffered for us, leaving us an example, that ye should follow his steps:
22 Who did no sin, neither was guile found in his mouth:

1 Peter 1:19 But with the precious blood of Christ, as of a lamb without blemish and without spot:

1 John 3:5 And ye know that he was manifested to take away our sins; and in him is no sin.

Right after I hit 'send' to post this to the blog I am going to pray for this heretic. He has a particular vibe of hell about him. Banal, resigned, tired vibe of hell.