The Galatians were happy and thankful when Paul shared the good news about Jesus with them.
you would have torn out your eyes and given them to me: Some think this means Paul had eye problems, but he might have used eyes as a symbol for something valuable (see Deuteronomy 32:10; Psalm 17:8; Matthew 18:9). The Galatians were thankful for Pual's message of good news. So, the Galatians would have given Paul their most valuable possession.