As Noach and his family enter into the Ark, we could try to imagine the uneasy feelings everyone had. As the rain would soon begin to fall and the ark was ready to protect all its inhabitants, G-d has one more strong message for them. He, G-d himself, would close the door. A small gesture, yet making a large statement, saying I will take care of you.
וְהַבָּאִ֗ים זָכָ֨ר וּנְקֵבָ֤ה מִכָּל־בָּשָׂר֙ בָּ֔אוּ כַּֽאֲשֶׁ֛ר צִוָּ֥ה אֹת֖וֹ אֱלֹהִ֑ים וַיִּסְגֹּ֥ר יְהוָ֖ה בַּֽעֲדֽוֹ׃
Thus they that entered comprised male and female of all flesh, as G-d had commanded him. And G-d shut (the door) on his behalf.
Question to Ponder: Can you think of another place in the Torah that a door gets closed? It doesn’t specifically say it was closed by G-d, but it does involve G-d destroying something.