What would you consider the differences in the two? A Brother asked me this very question tonight and here's what I told him. God's knowledge is knowing something and allowing it to happen. God's foreknowledge is He actively decreeing them to come to pass. God's knowledge knew the falls of Satan and Adam, but He didn't force them to do their wickedness. God's foreknowledge was sending Jesus to redeem His elect. Not word-for-word, but close to that is how I answered him.