Knowing and realizing are two different things. To know means to have information, information, data. To be aware means to be aware of what is happening.
For example, I can know that a loved one has cheated on me, but at the same time not be aware of what happened and what is happening to me in connection with this.
A person who knows a lot, sees others first. A person who is able to be aware first of all sees himself.
Someone who knows a lot, but lives without awareness, is more likely to suffer, be offended, blame others and make decisions that are not the most reasonable. One who is able to be aware and lives in awareness — to blame, be offended, take revenge, etc. not inclined.