Jesus was born sinless because HE IS GOD.
He TOOK ON human form, but remained God. GOD took on human form to CLEANSE it!
He did not lay aside His holiness to become man.
So Jesus wasn’t made unclean by touching the leper. Instead, He touched the leper and MADE HIM CLEAN.
So why was He born of a virgin as He was?
It was part of God’s plan, and part of the highway of faith He’s built for us through the dark wilderness of this world.
It was another way in which God was revealing Himself and His ways to us while ALSO working for our sake, just as He demonstrated His love by giving His Son for us (John 3:16).
Could God have just forgiven humanity for all of our sins without Jesus’ death? Yes, in that He can do anything. But no, because spiritually, it would have been unwise and counter-productive because we wouldn’t be changed in our hearts towards Him. We wouldn’t have learned anything. And no, too, because He would have visibly violated His justice for the sake of His love and mercy towards us.
Joseph and Mary were faithful where Adam and Eve failed, and their faith was rewarded when it was strengthened through angelic visits. The circumstancs of Jesus’ birth are to counteract the disobedience of Adam and Eve, and VISIBLY so. We are TRANSFORMED by recognizing the differences.
Adam and Eve transgressed, and they NATURALLY produced Cain, and their sin gave us over to eternal death. Joseph and Mary were faithful, tender-hearted, and obedient to God, and so SUPERNATURALLY, through the Holy Spirit, they became parents to the Son of God who brings eternal life.
And too, the glory of God goes with Him. So His Son couldn’t be born in a completely ordinary, “natural” way. And part of that glory is also that the King of Kings, the King of all, was born in a lowly way, in a stable and not a palace. And His first visitors included lowly and despised shepherds—though they were led to seek Him due to a visit they had received from angels, when the glory of the Lord shone around them.
I know it but it appears that Romulus doesn’t or denies it.