Genesis 6:5 is about people prior to the flood, it is not about everyone who was alive before the flood because Noah and his family are exceptions and were saved from the wicked generation of that time, as the scriptures say, "And spared not the old world, but saved Noah the eighth person, a preacher of righteousness, bringing in the flood upon the world of the ungodly;" (2 Peter 2:5) So, this is not the T of TULIP because it is not universal depravity.
But you asked for a rating on a scale from 1 to 10. Are you asking for an intensity of corruption on this scale? Here's the passage with a little context
And God seeing that the wickedness of men was great on the earth, and that all the thought of their heart was bent upon evil at all times, It repented him that he had made man on the earth. And being touched inwardly with sorrow of heart, He said: I will destroy man, whom I have created, from the face of the earth, from man even to beasts, from the creeping thing even to the fowls of the air, for it repenteth me that I have made them. But Noah found grace before the Lord.
Genesis 6:5-8
Man and beast are destroyed because God repents of having made them, this is the setting, and Noah and his family are saved from the coming destruction because Noah found grace before the Lord. And that phrase "found grace before the Lord", what does it mean? John Calvin says it means that, "here Noah is declared to have been acceptable to God, because, by living uprightly and homily, he kept himself pure from the common pollutions of the world". Noah did so by grace, of course, but he is not among the ones condemned and hence is not an example of the T of TULIP in this story. Noah is instead an example of godliness.
So, the rating is wicked enough to be judged and that could be anywhere from 1 to 10 depending on the individual, one may speculate that the pre-diluvian people were especially wicked or that they were not so different from people today. It is noteworthy that the animals were also destroyed, so, maybe the punishment is not meted out because of exceptional wickedness.
Yes, you have said that. And the verses you list can be used to construct such a view when taken in isolation from other verses and their own context. But here I will ask what do the scriptures say of Enoch, and of Job, and of Ruth, and Blessed Mary? Are these not held up as shining examples to follow? Consider what the scriptures say of them:
- Hebrews 11:5 By faith, Enoch was transferred, so that he would not see death, and he was not found because God had transferred him. For before he was transferred, he had testimony that he pleased God.
- Job 1:8 And the LORD said to Satan, "Have you considered my servant Job, that there is none like him on the earth, a blameless and upright man, who fears God and turns away from evil?"
- Ruth 4:11-12 All the people who were at the gate, along with the eldest, answered, "We are witnesses. May the Lord make this woman, who enters into your house, like Rachel, and Leah, who built up the house of Israel, so that she may be an example of virtue in Ephrathah, and so that her name may be honoured in Bethlehem. 12 And may your house be like the house of Perez, whom Tamar bore to Judah, of the offspring which the Lord will give to you from this young woman."
- Luke 1:28 And upon entering, the Angel said to her: "Hail, full of grace. The Lord is with you. Blessed are you among women." Luke 1:46-49 And Mary said: "My soul magnifies the Lord. 47 And my spirit leaps for joy in God my Saviour. 48 For he has looked with favour on the humility of his handmaid. For behold, from this time, all generations shall call me blessed. 49 For he who is great has done great things for me, and holy is his name.
So, there are people with whom God is well pleased. All such are so by grace, and thus the testimony of scripture is not quite the T of TULIP.
Certainly Jesus is without sin, this is never in dispute with Christians; nevertheless the examples I gave are also examples of righteous people. God called Job blameless.