In Isaiah 40:12 'to weigh the mountains in a balance, and the hills in scales,' signifies that the celestial aspects of love and charity are from the Lord, and that He alone disposes their states.

(Reference: Arcana Coelestia 3101)

145. "'Still, hold fast what you have till I come.'" (2:25) This symbolically means, so that they may retain the few things that they know from the Word about charity and its resulting faith, and live according to them, until the New Heaven and New Church are formed, which are the Lord's advent. For it is only people like this who accept what the doctrine of the New Jerusalem teaches regarding the Lord and charity.