The noun "love" can be translated as a verb. This phrase can be made active. AT: "God showed that he loves us" (See: [[rc://en/ta/man/translate/figs-abstractnouns]] and [[rc://en/ta/man/translate/figs-activepassive]])
Here "propitiation" refers to Jesus' death on the cross appeasing God's wrath against sin. The word can be translated with a verbal phrase. AT: "he sent his Son to be the sacrifice that appeased his wrath against our sins" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])