This verse, "You foolish ones, didn’t he who made the outside make the inside also?" from Luke 11:40, is part of a larger condemnation by Jesus against the Pharisees in Luke 11. Here's a breakdown of what it means:

Context is key: Jesus is criticizing the Pharisees for being meticulously clean and observant on the outside (in their rituals, appearances, and adherence to external laws), while neglecting their inner selves (their hearts, minds, and motives).

"You foolish ones": This is a strong rebuke. Jesus is calling them out for their hypocrisy and lack of understanding.

"Didn’t he who made the outside make the inside also?": This is the core of the verse. It points to God as the creator of all things, both physical (the "outside") and spiritual/inner (the "inside" - the heart, soul, and character). The argument is:

If God created both, then both are important to Him.
It's foolish to focus solely on outward appearances and actions while ignoring the condition of one's heart.

In essence, the verse argues that:

God cares about inner purity, not just outward observance. The Pharisees were obsessed with external rituals and appearances, but their hearts were often filled with greed, pride, and self-righteousness.
True righteousness comes from within. It's not enough to just look good to others; one must have a genuine change of heart and a commitment to God's will.
Hypocrisy is a dangerous trap. It's self-deception and ultimately displeasing to God.

Paraphrasing the verse could be:

"You fools! Don't you realize that the same God who created your physical body also created your soul? Why are you so concerned with appearances and neglecting the state of your heart?"
"If God made both the outside and the inside, wouldn't He care about both? It's foolish to think you can please Him by focusing only on outward actions while ignoring the corruption within."

The verse serves as a timeless reminder that genuine faith requires a transformation of the heart, not just adherence to external rules.