Third. Though conceived and born in the Covenant, the child was still "lost" before Jesus "found" him or her. Matthew 18:11 & 18:13.
Fourth. The covenantal child had apparently been brought to Jesus, physically, by a believing parent. Matthew 18:1 cf. 17:15-16 and Mark 9:17,36 and Luke 9:38,48.
Fifth. Though the little covenantal child had been lost since the imputation of Adam’s sin at his or her conception (cf. Psalm 51:5) — he or she had been a lost "sheep" and not a lost goat. Matthew 18:12-14.