The following questions, which might well be asked, are—where did sin come from, or what was the origin of sin? From whom, or from where, or from what, did sin spring forth? Has sin always existed, or is it some new thing which God’s created beings brought forth? Did God create sin by arbitrarily pronouncing that certain things were evil; or did God, in effect, create sin by the institution of His law?  We know that God is perfectly holy, and that whatsoever He does determines what is good; and that God Himself cannot sin. Therefore, should we say that before God created man or Lucifer and the other angels, that sin did not exist, or that God was unaware of its existence?

Isa 6:1 In the year that king Uzziah died I saw also the Lord sitting upon a throne, high and lifted up, and his train filled the temple.
2 Above it stood the seraphims: each one had six wings; with twain he covered his face, and with twain he covered his feet, and with twain he did fly.
3 And one cried unto another, and said, Holy, holy, holy, is the LORD of hosts: the whole earth is full of his glory.

Tit 1:2 In hope of eternal life, which God, that cannot lie, promised before the world began;

Heb 6:18 That by two immutable things, in which it was impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us:

Many there are who believe that Satan is the author of sin; that because he was the first to sin against God, he is the father of everything that is evil. Since Satan himself is a created being, not an eternal being like God, that leaves us with some very perplexing questions. If we are to say, that before Satan, sin did not exist, or God, at least, was not aware of the concept of sin, then He could not be omniscient; nor could He have known all things from beginning to end, as the Scriptures plainly teach. However, to those who know the God of the Bible, such thoughts are preposterous. God knows, and has known throughout all eternity, everything there is to know with one, all encompassing thought; and nothing has ever taken Him by surprise, nor has He ever discovered anything. Another thought concerning this proposition is—that if Satan were truly the father of sin, where did he acquire the ability to create this new thing?—for he is but a son of God (angel), and not another god. How could he have brought forth sin, something which his Father could not, or would not do? Furthermore, if Satan could be considered the author of sin, he must have been endowed with the necessary capacity that was given to him by his Creator. We must say, that even though sin, before the fall of Lucifer (Satan), had never been manifested, God knew all too well that the concept of this thing, called sin, was indeed a reality. God also knew, as a certainty, that man would transgress into sin; for before He ever made the angels or the world, He already provided a way to redeem fallen man.

John 8:44 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. (Not the creator of lies, but the one who spawned the lie.)

Job 1:6 Now there was a day when the sons of God came to present themselves before the LORD, and Satan came also among them.

Isa 46:9 Remember the former things of old: for I am God, and there is none else; I am God, and there is none like me,
10 Declaring the end from the beginning, and from ancient times the things that are not yet done, saying, My counsel shall stand, and I will do all my pleasure:

Isa 44:6 Thus saith the LORD the King of Israel, and his redeemer the LORD of hosts; I am the first, and I am the last; and beside me there is no God.
7 And who, as I, shall call, and shall declare it, and set it in order for me, since I appointed the ancient people? and the things that are coming, and shall come, let them shew unto them.
8 Fear ye not, neither be afraid: have not I told thee from that time, and have declared it? ye are even my witnesses. Is there a God beside me? yea, there is no God; I know not any.

Eze 28:15 Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee.

1 Pet 1:18 Forasmuch as ye know that ye were not redeemed with corruptible things, as silver and gold, from your vain conversation received by tradition from your fathers;
19 But with the precious blood of Christ, as of a lamb without blemish and without spot:
20 Who verily was foreordained before the foundation of the world, but was manifest in these last times for you,

By the very fact that God is the standard for everything holy, just, and good, such a foundational truth must preclude, that everything outside of who God is and what He does is what we call sin. Furthermore, everything that is in rebellion against God, His supreme authority, and His standard of righteousness, is also sin; and because the possibility existed to commit such a trespass against these standards, even before there were any created beings that could, and would commit such acts, must have already been known to the all-knowing God.

Psa 145:17 The LORD is righteous in all his ways, and holy in all his works.

Lastly, in using a correlation from Scripture concerning light and darkness, we might also gain some insight into the origin of sin. The Bible declares that “God is light, and in him is no darkness at all.” However, God, speaking through the prophet Isaiah said, “I form the light, and create darkness.” Therefore if God, who “is light,” created “darkness,” could not God, who is holy, also have created the concept of sin? Furthermore, we also know from Scripture that “God is love,” and as we have seen, sin is the opposite of love, just as darkness is the opposite of light. Could we not say therefore, that if God, who is light, and created darkness; could He not, though He is “of purer eyes than to behold evil,” also have created the concept of evil?—“I make peace and create evil.”

1 John 1:5 This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all.

1 Tim 6:16 Who only hath immortality, dwelling in the light which no man can approach unto; whom no man hath seen, nor can see: to whom be honour and power everlasting. Amen.

Isa 45:5 I am the LORD, and there is none else, there is no God beside me: I girded thee, though thou hast not known me:
6 That they may know from the rising of the sun, and from the west, that there is none beside me. I am the LORD, and there is none else.
7 I form the light, and create darkness: I make peace, and create evil: I the LORD do all these things.

1 John 4:8 He that loveth not knoweth not God; for God love.

Hab 1:13 Thou art of purer eyes than to behold evil, and canst not look on iniquity: wherefore lookest thou upon them that deal treacherously, and holdest thy tongue when the wicked devoureth the man that is more righteous than he?

To answer our question, ‘Where did sin come from?’, we make the following conclusions:

1. Although Lucifer spawned the first sin, he was not the creator of the concept of sin.

2. The concept of sin has always been known to the all-knowing God.

3. Sin exists because—either it is a created concept of God brought about by God’s decrees, or, it has always co-existed as the eternal antithesis of everything that God is.

4. Sin could only experientially exist because, although God cannot sin, He made creatures who could.

Col 1:16 For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him: