Deuteronomy 4:18

18 the likeness of anything that creeps on the ground, the likeness of any fish that is in the water under the earth;

Deuteronomy 4:18 Meaning and Commentary

Deuteronomy 4:18

The likeness of anything that creepeth on the ground
As serpents by many; and indeed that creature is introduced into almost all the idolatries of the Heathens, which seems to take its rise from the serpent Satan made use of to deceive our first parents:

the likeness of any fish that is in the waters beneath the earth;
as the crocodile and hippopotamus, or river horse, by the Egyptians; and Dagon and Derceto, supposed to be figures in the form of a fish, among the Phoenicians.

Deuteronomy 4:18 In-Context

16 Lest you corrupt yourselves, and make yourself an engraved image in the form of any figure, the likeness of male or female,

17 the likeness of any animal that is on the earth, the likeness of any winged bird that flies in the sky,

18 the likeness of anything that creeps on the ground, the likeness of any fish that is in the water under the earth;

19 and lest you lift up your eyes to the sky, and when you see the sun and the moon and the stars, even all the host of the sky, you are drawn away and worship them, and serve them, which Yahweh your God has allotted to all the peoples under the whole sky.

20 But Yahweh has taken you, and brought you forth out of the iron furnace, out of Egypt, to be to him a people of inheritance, as at this day.