en_tn/1ch/29/15.md

we are strangers and travelers before you

This speaks of people's lives being short as if they were travelers only here on earth for a short time. AT: "For our lives are short and we are like strangers and travelers who pass before you" (See: rc://en/ta/man/translate/figs-metaphor)

Our days on the earth are like a shadow

This speaks of people's lives being short as if they were a shadow that is only visible for a short time. A person's lifetime is represented by his "days." AT: "Our time here on earth is like a shadow that disappears quickly" (See: rc://en/ta/man/translate/figs-simile and rc://en/ta/man/translate/figs-synecdoche)