Hagar was young, enslaved, and pregnant when Abraham and Sarah sent her away into the wilderness with nothing but bread and water. When the water was gone, she put her child under a shrub and sat at a distance "that she might not see the death of the child." And God spoke to her. He asked her what was wrong. He opened her eyes to a well she had not seen. And he made a covenant with her child. In Genesis 21, Hagar receives one of the most specific divine attentions in the patriarchal narratives. The young, desperate, displaced woman with a child is the one God pursues.
Psalm 71:5 was written as a prayer of one who had known God from youth: "For thou art my hope, O Lord GOD: thou art my trust from my youth." The Hebrew word for "hope" β tiqvah β means expectation, the thing a person waits for. The teen who brings her fear to God is not bringing something God is unprepared for. Youth and hope are words God joins together.
Commentary is from a charismatic Protestant perspective, drawing on KJV text and public-domain sources including Spurgeon, Andrew Murray, and Matthew Henry.