Arcana Coelestia #9597
9597. 'With cherubs' means the Lord's watchfulness, guarding it from the approach of the hells and the harm they can do. This is clear from the meaning of 'cherubs' as watchfulness and providence, preventing any approach to the Lord except through good and protecting from harm the good from the Lord which exists in heaven and with man, dealt with in 9509, consequently guarding heaven from the approach of the hells and the harm they can do.
Arcana Coelestia #9631
9631. 'From the skins of red rams' means [consisting of] external truths derived from good. This is clear from what has been stated and shown regarding 'the skins of red rams' in 9471.