This song expresses trust in the faithfulness of God who will care for us as a shepherd faithfully cares for his sheep. Heidelberg Catechism, Lord’s Day 1, Question and Answer 1 says, “He also watches over me in such a way that not a hair can fall from my head without the will of my Father in heaven; in fact all things must work together for my salvation.”
Additionally, Heidelberg Catechism, Lord’s Day 10, Question and Answer 28 says that the providence of God leads me to trust him fully, being “patient when things go against us, thankful when things go well, and for the future we can have good confidence in our faithful God and Father that nothing in creation will separate us from his love.”
Belgic Confession, Article 13 is clear to testify that he “watches over us with fatherly care,” and “in this thought we rest, knowing that God holds in check the devils and all our enemies, who cannot hurt us, without divine permission and will.”