Knowing that God is with you means that all heaven is backing you. God in you is power and victory. Rom. 8:31 asks if God is for us, who can be against us? Samson was a man who did great things when the Spirit of the Lord moved upon him (Judges 13-16). God’s strength was on him when he killed the lion and when he killed 30 men and when he killed 1,000 mighty men with a donkey jawbone. He allowed himself to be vulnerable when he was sinfully involved with Delilah and didn’t realize that the Lord had departed from him. His strength was from the Lord; it was not his own strength. At the end of his life God strengthened him to bring down the temple of a false god and to kill more of the enemy then than he had in his life. Remember, God is in you. What you can’t do, God can and will do, if it’s what He has called you to do. Also remember that the Greater One is in you (1 John 4:4).