You are a good standard-bearer for the only One who matters.
All the glory belongs to God.
I had to lose my pride to ask God for help. It took 40 years of agnosticism.
Then, everything changed for the better.
The prayers of the righteous are powerful indeed. Do not give up but continue praying for your friend and reading Scripture to him. We can only plant the seed,it is not up to us whether it takes root. But your faithfulness will be rewarded by the One who gave all for you regardless of the result.