“You shall not add to the word which I command you, nor take from it, that you may keep the commandments of the Lord your God which I command you.” Deuteronomy 4:2

If you’re like me you would say, “This applies to the written word of God. I found out first hand that this applies to both the written word of God and to what He tells me to do or not do.
Back in 1999, I was working for the Principal Financial Group in Des Moines, Iowa. The Lord told me to ask a female co-worker (and fellow believer in Christ) out on a date. I was very reluctant at first to do so. Once the Lord convinced me to obey Him, I did ask her out.
She turned me down. I was very upset with God for telling me to ask her out. I had planned the date (all very appropriately) for the night she and I would go out. When she turned me down, I got very belligerent with God because she said, “No.”
When I complained to God about this, His answer to me was “What’s the problem?” Now for anyone who has the Spiritual Gift of Teaching, you will fully understand my reaction. You are probably laughing hysterically right now.
I lost it. I even accused God of “Being Dense”. The conversation went along these lines:

Me: God, you told me to ask her out and she turned me down!
God: So what’s the problem?
Me: [Very belligerently] I did what YOU told me to do and she turned me down!
God: Okay, you asked her out. What’s the problem?
Me: [Exasperated now.] Are You Dense? You, told me to take her on a date. She said, no.
God: Fredrick, I told you to ask her out. I never told you to take her on a date.
I got immediately humbled that I had added to His Word to me and failed to just do what He told me to do and wait for further instructions.