Then the Lord shut him in
Noah was a man called by God. He was asked to do something irrational. Building a huge boat in the middle of nowhere meant he was either totally mad or perhaps in the know about something. Can you imagine the ridicule he must have attracted? I suspect that even his family thought he was a sandwich or two short of a picnic. And yet, God had Promised Noah. He made a covenant with him that as he obeyed and built the ark, so God would save him and all his loved ones. Noah was not surprised when that deluge came but I suspect that many had to eat humble pie. For most, it was too late.
But Noah and his family were safe in the ark, a symbol of the sure salvation that comes through Jesus Christ. As we obey by believing in the One God has sent (John 3:16-17) so we will be saved from the dreadful judgement that is surely still to come upon the earth. Fortunately, God does not ask us to do a difficult thing like building a huge boat, but simply to believe in Jesus Christ and walk into the salvation that has been prepared for us. All who call on the name of the Lord will be saved (Acts 2:21). In that we are eternally secure. I wonder, has God shut you in?