if it's cool for my opinion; i believe you did right, under normal circumstances, you are the musician for your pastor, but it was benediction, and the other musician was there already....it would have been embarrassing for both of you!!!!! because you are right, your pastor probably would 've been done by the time you got there, plus the poor fella was probably already feeling like he knows you would 've had no problem picking it up.........and dont let it be a song that basically any musician or most musicians would've gotten.......oh my go!!!! i know that feeling.....he would've been feeling like those commercials.." going anywhere"...lol feeling like he in the wrong place at the wrong time......but your decision changed all of that.....flesh and blood didnt reveal it to ya! lol...... it was the spirit.......anyhoo , keep letting god use ya!!!!!gieres!!!!!