711. That 'entering into the ark' means being made ready has been stated already at verse 18 of the previous chapter. There however it meant being made ready for salvation as regards things of the understanding, which are the truths of faith, whereas here it means being made ready as regards those of the will, which are goods springing from charity. Unless a person has been made ready, that is, has been supplied with truths and goods, he cannot possibly be regenerated, still less undergo temptations, for the evil spirits who are at that time with him activate the falsities and evils that are his. And unless truths and goods are present towards which they are turned by the Lord and by which they are scattered, he goes under. The truths and goods are the remnants which the Lord preserves for such purposes.

2366. 'For they have come under the shadow of my roof' means that the good of charity exists with them. This is clear from the meaning of 'a house' as good, 710, 2231, 2234, which here is called 'the shadow of the roof' for a reason to be dealt with next.