Osvaldo and Iris

I had the Bible Study with Osvaldo this morning, we are on lesson 9 on the one on won course and I feel that he still does not understand much, pray for Osvaldo that God would open his understanding, Iris is wife is also hearing very intently while she serves us mate!!!, but I come out sometimes sad because he just does not see much yet, but I forget that God is the enlightener of the soul, pray that God would open his eyes to see the need to come to Christ, thanks.