Born (in what condition were we born):
Psalm 51:5 Behold, I was brought forth in iniquity, and in sin did my mother conceive me.
1Corinthians 15:22a For as in Adam all die,
To be “in sin” is to be under the “law of sin and death” – since Adam sinned and ushered in the curse of sin on all of creation, we are all born in sin, therefore, all die. The ultimate question isn’t “are we born in sin?”; the ultimate question is, “will we die in sin?”
Psalm 58:3 The wicked are estranged from the womb; they go astray from birth, speaking lies.
We do not have to be taught to lie, we transition quite easily to lying from the moment we understand that lying results in a more desired outcome than telling the truth. “Did you open the cookie jar?” “Did you hit your sister?” “Did you do your homework?” “Did you steal ‘this or that’?”
Genesis 18:25 Far be it from you to do such a thing, to put the righteous to death with the wicked, so that the righteous fare as the wicked! Far be that from you! Shall not the Judge of all the earth do what is just?"
Before we consider it an injustice that a baby would be condemned, let’s first consider that God is just – He will judge rightly. If it is not justice to condemn a baby, He won’t. If there is a point where the baby becomes an accountable child, that is for God to determine; after all, He is the Creator, and His ways are above our ways.
Isaiah 55:8-9 For my thoughts are not your thoughts, neither are your ways my ways, declares the LORD. 9 For as the heavens are higher than the earth, so are my ways higher than your ways and my thoughts than your thoughts.
Genesis 1:1 In the beginning, God created the heavens and the earth.
Job 38:1-4 Then the LORD answered Job out of the whirlwind and said: 2 "Who is this that darkens counsel by words without knowledge? 3 Dress for action like a man; I will question you, and you make it known to me. 4 "Where were you when I laid the foundation of the earth? Tell me, if you have understanding.
Job had questioned God and God spends a significant part of the Book of Job rebuking him, the above is just a small sampling. We are warned repeatedly in Scripture not to think of ourselves more highly than we ought, we are commanded not to be wise in our own eyes.
Proverbs 3:5-7 Trust in the LORD with all your heart, and do not lean on your own understanding. 6 In all your ways acknowledge him, and he will make straight your paths. 7 Be not wise in your own eyes; fear the LORD, and turn away from evil.
Therefore, our concern should not be "fairness" on God's part, or question His ways, but instead you should be more concerned about how God will justly judge you. After all, consider what we've become: