en_tn_condensed/psa/080/015.md

This is the root that your right hand planted

The right hand represents the Yahweh's power and control. Alternate translation: "This is the root that you, Yahweh, planted" (See: rc://en/ta/man/jit/figs-metonymy)

the son that you have strengthened for yourself

The word "son" here is probably a metaphor for the "shoots" of (Psalms 80:11). Alternate translation: "the shoot you have caused to grow for your pleasure" (See: rc://en/ta/man/jit/figs-metaphor)