en_tn/psa/026/006.md

I wash my hands in innocence

This seems to refer to a ritual washing of hands in water to symbolize freedom from sin and guilt.

I go around your altar

This was an action of worship that the Israelites were accustomed to doing.

the house where you live

This refers to the tent that God told his people to set up so that they could worship him there. AT: "the holy tent where you live" or "your holy tent"