en_tn_condensed/psa/065/009.md

help the earth

This refers to the soil of the earth.

you greatly enrich it

"you make the soil very good so that good things will grow in it"

the river of God is full of water

This refers to the supply of water in the sky that God sends to water the earth and fill the streams. Alternate translation: "you fill the streams with water" (See: rc://en/ta/man/jit/figs-metonymy)