103. And hast not failed, signifies so far as they could. This is evident from the signification of "not failing," in reference to those who are eager for the knowledges of truth and good, as being so far as they could; for in what now follows, a life according to these knowledges is treated of. Those who are in a life according to these go forward and do not fail; but those who are as yet in knowledges alone, go forward as far as they can, but do not yet have the light of life, from which is vigor.
Arcana Coelestia #3237
3237. 'And her name was Keturah' means the essence of this Divine Truth. This is clear from the meaning of the word 'name' as the essential nature, and of 'calling by name' as knowing the essential nature, dealt with in 144, 145, 1754, 1896, 2009. Now because one does not speak of the nature of what is Divine but of the Esse of this, 'name' here means the essence, indeed the essence of Divine Truth - Divine Truth being meant here by 'the wife', to whom 'her' refers. For here 'the wife' means Divine Truth, see just above in 3236. From this it is evident what 'Keturah' in general embodies.