…was the Word and the Word was with God and the Word was God…John 1 vs 1
And right back at the beginning God had you in mind. He decided that you’d be in his image (granted qualities of of holiness , unique and elevated) and given dominion (the status of a king whose decisions and actions will determine things) Genesis 1 vs 26
So on that basis, you should speak things to be as though they are, because so long as you’re in right standing with God His power will back the authority behind your words.
Cain was cast out of God’s presence and cursed. He was the first recorded murderer driven by his envy for his brother. Even though most of us have not progressed to blood thirsty levels, if one got a snippet of our thoughts we’ve done all sort of horrendous things, and we’re just as guilty. So we need the redemption Cain should have sought from God, for therein lies the key to our empowerment and salvation.