'Advantage' in the Bible

for fear Satan should gain an advantage over us. For we are not ignorant of his devices.

Make room for us in your hearts. There is not one of you whom we have wronged, not one to whom we have done harm, not one over whom we have gained any selfish advantage.

Have I gained any selfish advantage over you through any one of the messengers I have sent to you?

I begged Titus to visit you, and sent our other brother with him. Did Titus gain any selfish advantage over you? Were not he and I guided by one and the same Spirit, and did we not walk in the same steps?