The full, unedited answer is here -
There are actually a number of different ways of making a careful case for God's existence from moral truth. Here's a brief example of one - https://www.youtube.com/watch?v=OxiAikEk2vU
Here's a long example of working through this topic slowly over three videos.
Part 1 - https://www.youtube.com/watch?v=mj2BeUP52Dc
Part 2 - https://www.youtube.com/watch?v=bwUUmjkfSh8
Part 3 - https://www.youtube.com/watch?v=1wFoPP9toMc
My website https://BibleThinker.org