It is true that leaders teachers and pastors are primary subjects, but all are building the church by making disciples, directly or indirectly, and will be rewarded accordingly. “Wisdom is justified of her children.” (Mt. 11:19)
“Therefore they that were scattered abroad went every where preaching the word.” (Acts 8:4)
“Now they which were scattered abroad upon the persecution that arose about Stephen travelled as far as Phenice, and Cyprus, and Antioch, preaching the word to none but unto the Jews only.” (Acts 11:19)
I understand that but I was specifically trying to show that 1 Cor 3 Paul had been addressing the leadership of the church in order to point out that it meant building the church rather then a personal purgatory.