God is more concern with who we ate than what we say we are.
Are you a real Christian?
Are you filled with the holy spirit?
Are you living a christ like life?
Is righteousness and holiness your life style?
when the children of God gathered in heaven, satan also went there in pretence but God knew him and spotted him Job.1:6. You can't hide or pretend in God's presence.
No matter the services you render in church or the outstanding positiong you are given, if you're not a real Christian you're wasting your time, energy and the reources you may be putting in for the services.
Beware and excessively avoid those pretending to be Christians but doesn't believe and experience the power of God that can effect change in their lives, they can mislead and discourage you from living a real Christian life Psalms.5:9.
All the things found in Matthew.15.19 should not be found in your life as a real Christian; instead replace them with the sincere milk(the word of God).
Finally sustain your christian life with prayers, the wprd of God, continuous praise and worship to God. for by strength shall no man prevail, its only by God's grace that you'll lofe a real christian life.