But they cried out . . . Time was doubtless mostly calculated by observing the sun, which could have been obscured by haze or clouds, and at best would be only an a guesstimate. We should remember that John wrote his account some 65 years after these events happened. So put all these factors together and you have a time discrepancy. I don't see the problem here.
Christians are to be good citizens, they obey the laws of the land and they pay their taxes.
If not, God's people would still be Egyptian slaves. And of every living thing of all flesh, two of every sort shalt thou bring into the ark. The repeated numbers are not to be added together, but only indicate a distribution. The number is repeated because a distribution is involved, and the repetition shows this. These 2 seemingly differing accounts of the creation process also leads some to believe that there were 2 different authors.