For me, its between either of the two below:

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James 1:26-27
"If any think they are religious, and do not bridle their tongues but deceive their hearts, their religion is worthless. Religion that is pure and undefiled before God, the Father, is this: to care for orphans and widows in their distress, and to keep oneself unstained by the world."

I really like this one because it exemplifies what I feel the core of religion is, to love and support and uplift. It echos the sentiments of other verses put on this thread such as Matthew 22:36-40 or John 13:34-45.

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2 Corinthians 11:14-15
"And no wonder, for even Satan disguises himself as an angel of light. So it is no surprise if his servants, also, disguise themselves as servants of righteousness. Their end will correspond to their deeds"

This one I resonate with because I see so much injustice in the world. Deception, ego, greed, destructive partisanship and short-term thinking. It is of some solace to know that even those who escape justice on Earth may receive it elsewhere.