Matt 6:1-18

1) secrecy and faith
If God's real... He sees all that stuff nobody else notices, and all that stuff going on in your mind & heart, the drizzle and the meaningful stuff, He sees that too. That's a thought experiment that you can do with pretty much anybody you have a language in common with. To say god can't do that, is really to say there isn't one. Past that you'll need the scriptures. But Jesus' punch line here is no loss (or should be no loss) on me. What if there's no rewards from this cosmic eves dropper? Well in fact there are rewards to be had, twice in the greater passage translated "openly." NKJV (Don't ask me about the original language)

2) the DISCIPLE's prayer
The opening of the prayer is more meaningful if an old testament understanding of names and 'nomenclature' is used. Back up to vs 7 for a vital/critical warning/caveat, repetition may be soothing to you, but it's not meaningful to God.

3) if then statement
The power here is in the value of the reward. The relationship looks like this forgive [men] --> [receive God's] forgiveness. The text states the inverse/corollary principle also. Failure to forgive is more costly than the one broken relationship, because God sees.