How do we know that all saints are in God's hands?

The assurance that all saints are in God's hands comes directly from the teachings of Jesus in John 10:27-29, where He states, 'My sheep hear my voice, and I know them, and they follow me. And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand.' This passage beautifully illustrates the security of believers as they are continuously held by the power of Christ, reaffirming that their salvation is eternally secure. In Isaiah 64:8, the imagery of God as the potter and us as the clay further emphasizes His sovereign control over our lives.