Therefore when thou dost an alms-deed, sound not a trumpet before thee, as the hypocrites do in the synagogues and in the streets, that they may be honoured by men. Amen I say to you, they have received their reward. But when thou dost alms, let not thy left hand know what thy right hand doth.
That thy alms may be in secret, and thy Father who seeth in secret will repay thee.
And when ye pray, you shall not be as the hypocrites, that love to stand and pray in the synagogues and corners of the streets, that they may be seen by men: Amen I say to you, they have received their reward.
But thou when thou shalt pray, enter into thy chamber, and having shut the door, pray to thy Father in secret, and thy father who seeth in secret will repay thee. And when you are praying, speak not much, as the heathens. For they think that in their much speaking they may be heard. Be not you therefore like to them for your Father knoweth what is needful for you, before you ask him."
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But that passage is about PRAYING and GIVING. It can't possibly be about preaching the Gospel which by definition has to be done in public.
Finally someone nailed it. Those verses had no application in this situation whatsoever.