WCF 10.02-03 God's Unusual Grace

Of Effectual Calling
2.This effectual call is of God's free and special grace alone, not from anything at all foreseen in man; who is altogether passive therein, until, being quickened and renewed by the Holy Spirit, he is thereby enabled to answer this call, and to embrace the grace offered and conveyed in it.

3.Elect infants, dying in infancy, are regenerated and saved by Christ through the Spirit, who worketh when, and where, and how he pleaseth. So also are all other elect persons, who are incapable of being outwardly called by the ministry of the word.