en_tn_lite_do_not_use/2co/05/19.md

That is

"This means"

in Christ God is reconciling the world to himself

Here the word "world" refers to people in the world. Alternate translation: "in Christ, God is reconciling mankind to himself" (See: rc://en/ta/man/translate/figs-metonymy)

He is entrusting to us the message of reconciliation

God has given Paul the responsibility to spread the message that God is reconciling people to himself.

the message of reconciliation

"the message about reconciliation"