God is not so much concerned with numbers of members in a church.  He is concerned with your growth.  God has given the church what is needed to make this growth take place, but much of the church is taken up with the money, power, and prestige or religion, so they don't listen to God's voice.

1 Corinthians 12:28 And God hath set some in the church, first apostles, secondarily prophets, thirdly teachers, after that miracles, then gifts of healings, helps, governments, diversities of tongues.

To edify is to build up. There is a building, a holy temple that is being built. It has foundations.

1 Corinthians 14:4 He that speaketh in an unknown tongue edifieth himself; but he that prophesieth edifieth the church.

1 Corinthians 14:5 I would that ye all spake with tongues, but rather that ye prophesied: for greater is he that prophesieth than he that speaketh with tongues, except he interpret, that the church may receive edifying.

1 Corinthians 14:12 Even so ye, forasmuch as ye are zealous of spiritual gifts, seek that ye may excel to the edifying of the church.