David is a wonderful name.

If you know the spelling of David as translated to Hebrew, see the Numerology and Non-English Alphabets article. It describes how to calculate for Pythagorean numerology name numbers with any language that uses A through Z as its alphabet.

Calculated with the English name, "David" has no 7s anywhere in it. The heart's desire number is the number 1. The personality number is the number 3. And the destiny number is the master number 22

A two-sentence interpretation: Tends to express himself creatively while being intent on methodically building a secure foundation for the future and wanting to be self-sufficient. "David" tends to be a builder that brings dreams into reality.

I'm uncertain what you visualize when you refer to "a connection."

Numerology can be used to become familiar with the energies represented by the numerical results of calculations. Perhaps those are sufficient to determine whether or not a connection you're referring to exists.