In many cases, the use of “eternity” in the Bible is pretty literal, simply meaning forever. This is especially true when the text refers to someone being condemned to hell or elevated to heaven. In some cases, however, “eternity” or “days of old” refers to what the Writings call the Most Ancient Church -- the first church among the earliest people, innocent souls who acted directly out of love of the Lord. Because of this association, things called “eternal” or “everlasting” usually represent the desire for good that arises from love to the Lord. If we love the Lord, then our desire will be to do His will and love as He loves. From that we will have a true desire to love and care for other people. That's the feeling described by “eternal.”

8302. 'Who is like You in holiness' means that He is the Source of everything holy. This is clear from the meaning of 'who is like You in holiness?' as the fact that nobody is so holy; but the meaning in the internal sense is that He is the Source of everything holy since He is Holiness itself. By 'that which is holy' is meant the Divine Truth emanating from the Lord. This Truth is called holy, and is meant also by the Holy Spirit, of whom it is therefore said that He is 'the Spirit of Truth', John 14:16-17; 15:26-27; 16:13, has been sent by the Lord, John 15:26-27, and will take from the Lord what He will declare, John 16:15. Since holiness is an attribute of Divine Truth which emanates from the Lord, angels - being recipients of that Truth - are therefore called 'holy', Matthew 25:31; Mark 8:38; Luke 9:26; so too are prophets, and in particular the Word, which is God's truth itself. The Lord as well - by virtue of the Divine Truth, which He is since He is its Source - is called 'the Holy One of Israel', 'the Holy One of Jacob', and 'the Holy One of God'.