'Know' in the Bible

[Live] as obedient children [of God]; do not be conformed to the evil desires which governed you in your ignorance [before you knew the requirements and transforming power of the good news regarding salvation].

For you know that you were not redeemed from your useless [spiritually unproductive] way of life inherited [by tradition] from your forefathers with perishable things like silver and gold,

and never return evil for evil or insult for insult [avoid scolding, berating, and any kind of abuse], but on the contrary, give a blessing [pray for one another’s well-being, contentment, and protection]; for you have been called for this very purpose, that you might inherit a blessing [from God that brings well-being, happiness, and protection].