It's not enough info to interpret it. You would need to start by breaking down some of the symbols.
Crosses are a Christian symbol. Are you Christian or not?
Crosses were used by the Roman Empire to punish people and were so painful they had to invent a new word for it: Excruciating.
Crosses get used in popular fiction as protective symbols against monsters, like vampires and werewolves.
But what does a cross mean to you?
Knees can be a symbol of humbleness, a la "get down on your knees." They can also be a symbol of a point of vulnerability.
But what do knees mean to you?
A window might be a "window of opportunity" -- ie a time frame in which something could occur. Pushing a person onto a window sill could be putting something in place for a particular time frame.
But what does a window sill mean to you?
Dreaming of individuals you actually know rarely is about that person. Instead, that person symbolizes something to you or sometimes your description of them in the dream is a play on words. When I had a corporate job, dreams of my ex husband were really dreams about my job. I was "working for The Man" and "married to my job," so my job was "The Man in my life."