Here are 8 Bible verses about sin being equal from the Old and New Testaments of the Holy Bible (King James Version), sorted from most to least relevant.
1 John 5:17 KJV
All unrighteousness is sin: and there is a sin not unto death.
Romans 3:10 KJV
As it is written, There is none righteous, no, not one:
James 2:10-11 KJV
For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all. For he that said, Do not commit adultery, said also, Do not kill. Now if thou commit no adultery, yet if thou kill, thou art become a transgressor of the law.
Romans 3:23 KJV
For all have sinned, and come short of the glory of God;
Luke 13:1-5 KJV
There were present at that season some that told him of the Galilaeans, whose blood Pilate had mingled with their sacrifices. And Jesus answering said unto them, Suppose ye that these Galilaeans were sinners above all the Galilaeans, because they suffered such things? I tell you, Nay: but, except ye repent, ye shall all likewise perish. Or those eighteen, upon whom the tower in Siloam fell, and slew them, think ye that they were sinners above all men that dwelt in Jerusalem? I tell you, Nay: but, except ye repent, ye shall all likewise perish.
John 8:44 KJV
Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.
1 Samuel 15:23 KJV
For rebellion is as the sin of witchcraft, and stubbornness is as iniquity and idolatry. Because thou hast rejected the word of the LORD, he hath also rejected thee from being king.
Hebrews 9:27 KJV
And as it is appointed unto men once to die, but after this the judgment: