And Her first born son is ‘the first’ of everything, – this is Vav ו, the Middle Pillar. (Ex. 23:19) The first of the fruits of your land... – the two pillars of truth☉Netzaḥ-Hod. What is “your land”? It is the Lower Shekhinah (Malkhut). And they are... all, the first fruits of everything (Ez. 44:30)... – from the aspect of the Righteous-One, Who is ‘all’ (kol).
And the Shekhinah is the earth, in which trees grow and flourish, about which it is stated: (Jer. 23:5)... a righteous sprout... which is: (Gen. 1:11) a fruit tree.