Where does “προσφέρω” come from?

προσφέρω (Greek) comes from Ancient Greek προσφέρω, from Ancient Greek φέρω, from Proto-Hellenic pʰérō, from Proto-Indo-European bʰéreti, from Proto-Indo-European bʰēr- — shiny, light brown.

προσφέρω (Greek): offer, propose; give, present