Example?
If you do not understand the simple things, or the "milk of the word", which, nobody can discern things themselves. Reading scripture (which I do NOT cherry pick) is done after praying God to send His Spirit to help us TO discern. I know, many do not rely on His God breathed words, but their own imaginations. Remember, Satan comes as an angel of light. How do we know that? Well...scripture! Not all "voices" are from God and one will be mis-directed...without discernment.
It seems God Himself wrote down the 10 commandments. Ex 31:18 And when He had made an end of speaking with him on Mount Sinai, He gave Moses two tablets of the Testimony, tablets of stone, written with the finger of God.
Therefore it is written,
“thou shalt not kill" Ex 21:13
[KILL
râtsach
raw-tsakh'
A primitive root; properly to dash in pieces, that is, kill (a human being)]
God communicated to Joshua,
And the LORD said unto Joshua, Fear not, neither be thou dismayed: take all the people of war with thee, and arise, go up to Ai: see, I have given into thy hand the king of Ai, and his people, and his city, and his land:
Jos 8:2 And thou shalt do to Ai and her king as thou didst unto Jericho and her king.
What did Joshua do to Jericho?
Joshua 6:21 (KJV) And they utterly destroyed all that was in the city, both man and woman, young and old, and ox, and sheep, and ass, with the edge of the sword.
Joshua supposedly heard the God of Isreal
say, "Kill!" (dash to pieces)
Moses read what the God of Israel had written, "Do not kill" (dash to pieces)
Caleb was maybe around 40 when God wrote down His commands and now in his 80s hears his friend say he heard God say something contrary to what God had written 40 years earlier.
Caleb had a dilemma. Does he go with God's written command (given to God's appointed leader) or God's spoken command (given to God's new appointed leader)?
Does God communicate different things to different people by different means? Does He contradict what is written? You make up your mind.