'Afraid' in the Bible

I went in response to a revelation, and in a private meeting with the reputed leaders, I explained to them the gospel that I'm proclaiming to the gentiles. I did this because I was afraid that I was running or had run my life's race for nothing.

Until some men arrived from James, he was in the habit of eating with the gentiles, but after those men came, he withdrew from the gentiles and would not associate with them any longer, because he was afraid of the circumcision party.

I am afraid of you, lest I have bestowed upon you labour in vain.