God graciously invited Noah to enter the ark with his family ( Genesis 7:1). This is the first occurrence of the offer "come" in the Bible. This invitation continues throughout Scripture, the last offer being in Revelation 22:17. God extends the invitation to people, He urges them to take advantage of the perfect provision He has made for their preservation, and He offers it in a time of impending judgment and gloom. [source][source][source]
"It is not that Noah"s works of righteousness gains [1] him salvation, for none is cited. Rather, his upright character is noted to condemn his generation, which merits death." [2][source]
"Sinful men do not deserve to live on God"s earth. This is the basic message of the Genesis Flood." [3][source]
God did not reveal the basis for His distinction between clean and unclean animals here ( Genesis 7:2). Israel"s pagan neighbors also observed clean and unclean distinctions between animals though they varied from country to country. In the Mosaic Law, God further distinguished between foods. Jesus Christ and the Apostle Paul taught that now these distinctions no longer need affect people as far as our relationship to God goes ( Mark 7:15; Mark 7:18-19; cf. Acts 10:15; Acts 11:9; Romans 14:14). [source][source][source]