In Latter-day Saint beliefs, the phrase "worlds without end" reflects the infinite nature of God’s creations. This concept is rooted in several scriptural sources and teachings from Church leaders.

One primary source is the Pearl of Great Price, specifically in Moses 1:33, where it says: "And worlds without number have I created; and I also created them for mine own purpose; and by the Son I created them, which is mine Only Begotten." This scripture reveals God's role as the creator of innumerable worlds.

Moreover, Doctrine & Covenants also touches upon this idea. For example, Doctrine & Covenants 76:24 talks about the multitude of worlds created by Christ: "And by him, and through him, and of him, the worlds are and were created, and the inhabitants thereof are begotten sons and daughters unto God."

Prophets and apostles have expounded on the vastness of God's creations. President Russell M. Nelson has spoken about the intricate and endless nature of the universe, emphasizing our role within it and the love God has for each creation.

Elder Neal A. Maxwell, a previous Apostle, often spoke about this theme, highlighting that our earth is just one of the countless worlds created by Heavenly Father. He emphasized that while the universe is vast, God's attention and love for us are very personal and specific.

The doctrine of "worlds without end" underscores the majesty and omniscience of God. It invites us to ponder our place within this expansive cosmos and to reflect on the purpose and significance of our lives. It also reinforces the eternal nature of God's work and glory, which is "to bring to pass the immortality and eternal life of man" (Moses 1:39).

This doctrine not only inspires awe but also reassurance that we are part of a grand, divine plan. It calls us to live up to our potential as children of God, with endless possibilities for growth and progression.

“Worlds without end" serve as a reminder of God's infinite power and love, and our eternal journey in His vast creations.