Good quote on the assurance of salvation

I couldn't be more in agreement—

Assurance of salvation cannot be reliably determined by what has happened in the past, no matter how dramatic or meaningful at the time. It can only be based with certainty on the evidence of present fruit being produced by a spiritual life (see 2 Pet. 1:5-11) (from MacArthur, Ephesians, MNTC, 210).

This morning I read John 15 and came to the came conclusion as well.