In Genesis 19:37; 21:26; 30:32; 40:7; Matthew 6:30; Luke 12:28, this signifies the perpetuity and eternity of a state. (Arcana Coelestia 2838)

In Psalm 2:7, this signifies in time; for with Jehovah the future is present. (True Christian Religion 101)

The expression 'even to this day' or 'today' sometimes appears in the Word, as in Genesis 19:37-38, 22:14, 26:33, 32:32, 35:20, and 47:26. In a historical sense, these expressions have respect to the time when Moses lived, but in an internal sense, 'this day' and 'today' signify the perpetuity and eternity of a state. 'Day' denotes state, and likewise 'today,' which is the current time. Anything related to time in the world is eternal in heaven, and to represent this, 'today' or 'to this day' is added. Although, in the historical sense, this appears as if the expressions only have a literal meaning, just like it says in other parts of the Word, such as Joshua 4:9, 6:25, 7:20, Judges 1:21, 26, etc. 'Today' means something perpetual and eternal in Psalms 2:7, 119:89-91, Jeremiah 1:5, 10, 18, Deuteronomy 29:9-14, Numbers 28:3, 23, Daniel 8:13, 11:31, 12:11, Exodus 16:4, 19, 20, 23, John 6:31, 32, 49, 50, 58, Matthew 6:11, and Luke 11:3.

(Reference: Arcana Coelestia 2838 [1-4], Genesis 47:26)

202. Antiquissima Ecclesia, quae caelestis homo, talis erat ut non solum ‘non comederet de arbore scientiae’, hoc est, disceret e sensualibus et scientificis quid fidei, sed ne quidem licebat eis ‘tangere istam arborem’, hoc est, cogitare ex sensualibus et scientificis aliqui quod esset fidei, ne a vita caelesti in vitam spiritualem, et sic porro, delaberentur. Talis quoque est vita angelorum caelestium; qui eorum intimus caelestes sunt, ne quidem admittunt ut nominetur fides aut quicquid aliquid a spirituali trahit; sique nominatur ab aliis, pro fide percipiunt amorem cum differentia iis solum cognita; ita quicquid est fidei, derivant ab amore et charitate; minus adhuc audire sustinent aliquid rationale et minime aliquid scientificum de fide; nam perceptionem habent a Domino per amorem quid bonum et verum; ex perceptione norunt ilico an ita sit vel non ita sit; quare cum de fide dicitur quid, non aliud respondent quam quod ita sit vel non ita sit, quia a Domino percipiunt: hoc est quod significant verba Domini apud Matthaeum, Erit sermo vester, Etiam etiam, Non non; quod ultra haec est, ex malo est, 5:37;

hoc nunc est quod ne quidem tangere eis licuerit fructum arboris scientiae; nam si tangerent, in malo essent, seu inde morerentur. Praeterea, angeli caelestes inter se loquuntur sicut alii de variis, sed loquela caelesti, formata et derivata ex amore, quae ineffabilior est quam loquela angelorum spiritualium.