'Perhaps' in the Bible

Therefore, [when I] was wanting [to do] this, perhaps then was I making use of vacillation? Or was I deciding what I was deciding according to the flesh, in order that with me my "yes" may be "yes" and my "no" [may be] "no" [at the same time]?

So that contrariwise ye ought rather to forgive him, and comfort him, lest perhaps such a one should be swallowed up with overmuch sorrow.

Or did I [perhaps] sin by humbling myself so that you might be exalted and honored, because I preached God’s gospel to you free of charge?

For I fear that perhaps when I come I will not find you to be what I want, and I may not be found by you to be what you want; there may be quarreling, jealousy, outbursts of anger, selfish ambitions, slander, gossip, arrogance, and disorder.