That I with body and soul, both in life and death, am not my own, but belong unto my faithful Saviour Jesus Christ; who, with his precious blood, has fully satisfied for all my sins, and delivered me from all the power of the devil; and so preserves me that without the will of my heavenly Father, not a hair can fall from my head; yea, that all things must be subservient to my salvation, and therefore, by his Holy Spirit, He also assures me of eternal life, and makes me sincerely willing and ready, henceforth, to live unto him.
(-Heidelberg Catachism, Lord's Day 1, Q/A 1)
We believe that this good God, after he created all things, did not abandon them to chance or fortune but leads and governs them according to his holy will, in such a way that nothing happens in this world without his orderly arrangement...
We do not wish to inquire with undue curiosity into what he does that surpasses human understanding and is beyond our ability to comprehend. But in all humility and reverence we adore the just judgments of God, which are hidden from us, being content to be Christ's disciples, so as to learn only what he shows us in his Word, without going beyond those limits.
This doctrine gives us unspeakable comfort since it teaches us that nothing can happen to us by chance but only by the arrangement of our gracious heavenly Father. He watches over us with fatherly care, keeping all creatures under his control, so that not one of the hairs on our heads (for they are all numbered) nor even a little bird can fall to the ground without the will of our Father.
(Belgic Confession, Article 13)
As the providence of God does, in general, reach to all creatures; so, after a most special manner, it takes care of His Church, and disposes all things to the good thereof.
(Westminster Confession of Faith, Chapter 5, Section 7)
For the complete text of these confessions and others, plus scripture references and other documents, see this link.