And you bring to point one of the unfortunate characteristics of many modern Christians. They are indoctrinated into a given set of beliefs with no acknowledgement that anyone else can have a call by God to further his Kingdom. It is unfortunate.
While Joel Olsteen teaches things outside Orthodox Christian teaching (as does Joyce Meyers) they would argue the Roman Catholic Church does as well.
I used to be of that sort. Until I realized God truly has called many people who aren’t like me and don’t believe in Orthodox Christianity in the same manner as I do.
Just because it is in the Church does not mean it’s good, and just because it’s outside does not mean it is not.
If you are a motivational preacher, then just say you are.
If you claim to preach the Gospel, then preach it. But make sure you preach it right:
Galatians 1:6 I am astonished that you are so quickly deserting him who called you in the grace of Christ and turning to a different gospel 7 not that there is another gospel, but there are some who trouble you and want to pervert the gospel of Christ. 8 But even if we, or an angel from heaven, should preach to you a gospel contrary to that which we preached to you, let him be accursed. 9 As we have said before, so now I say again, If any one is preaching to you a gospel contrary to that which you received, let him be accursed.
2 Corinthians 11:1 I wish you would bear with me in a little foolishness. Do bear with me! 2 I feel a divine jealousy for you, for I betrothed you to Christ to present you as a pure bride to her one husband. 3 But I am afraid that as the serpent deceived Eve by his cunning, your thoughts will be led astray from a sincere and pure devotion to Christ. 4 For if some one comes and preaches another Jesus than the one we preached, or if you receive a different spirit from the one you received, or if you accept a different gospel from the one you accepted, you submit to it readily enough. 5 I think that I am not in the least inferior to these superlative apostles. 6 Even if I am unskilled in speaking, I am not in knowledge; in every way we have made this plain to you in all things.
7 Did I commit a sin in abasing myself so that you might be exalted, because I preached God’s gospel without cost to you? 8 I robbed other churches by accepting support from them in order to serve you. 9 And when I was with you and was in want, I did not burden any one, for my needs were supplied by the brethren who came from Macedo′nia. So I refrained and will refrain from burdening you in any way. 10 As the truth of Christ is in me, this boast of mine shall not be silenced in the regions of Acha′ia. 11 And why? Because I do not love you? God knows I do!
12 And what I do I will continue to do, in order to undermine the claim of those who would like to claim that in their boasted mission they work on the same terms as we do. 13 For such men are false apostles, deceitful workmen, disguising themselves as apostles of Christ. 14 And no wonder, for even Satan disguises himself as an angel of light. 15 So it is not strange if his servants also disguise themselves as servants of righteousness. Their end will correspond to their deeds.