58. Verse 30 And to every wild animal of the earth and to every bird of the air, ¹ and to everything creeping over the earth in which there is a living soul [I give] every plant for food; and it was so.

The natural food of this same [spiritual man] is being described here. His natural level is here meant by 'wild animal of the earth' and by 'bird of the air, to which 'the edible and green plant ² has been given for food'. Both kinds of food, natural and spiritual, are referred to in David as follows,

Jehovah causes the grass to grow for the beast, and the plant for man's service, that he may bring forth bread from the earth. Psalms 104:14.

Here 'beast' stands for both wild animals of the earth and birds of the air, ¹ both being mentioned in verses 11-12 of that Psalm.

Footnotes:

The Bible refers to the Lord in many different ways seemingly interchangeably. Understood in the internal sense, though, there are important differences. To some degree, the meanings all start with "Jehovah," which is the Lord's actual name. It represents the perfect, eternal, infinite love which is the Lord's actual essence. As such it also represents the good will that flows from the Lord to us and His desire for us to be good. "God," meanwhile, represents the wisdom of the Lord and the true knowledge and understanding He offers to us. The term "the Lord" is very close in meaning to "Jehovah," and in many cases is interchangeable (indeed, translators have a tendency to go back and forth). When the two are used together, though, "the Lord" refers to the power of the Lord's goodness, the force it brings, whereas "Jehovah" represents the goodness itself. In the New Testament, the name "Jehovah" is never used; the term "the Lord" replaces it completely. There are two reasons for that. First, the Jews of the day considered the name "Jehovah" too holy to speak or write. Second, they would not have been able to grasp the idea that the Lord -- who was among them in human form at the time -- was in fact Jehovah Himself. This does ultimately lead to a difference in the two terms by the end of the Bible. Thought of as "Jehovah," the Lord is the ultimate human form and has the potential for assuming a physical human body; thought of as "the Lord" He actually has that human body, rendered divine by the events of his physical life.