If
King James Dictionary [1]
IF, It is used as the sign of a condition, or it introduces a conditional sentence. It is a verb, without a specified nominative. In like manner we use grant, admit, suppose. Regularly, if should be followed, as it was formerly, by the substitute or pronoun that, referring to the succeeding sentence or proposition. If that John shall arrive in season, I will send him with a message. But that is now omitted,and the subsequent sentence, proposition or affirmation may be considered as the object of the verb. Give John shall arrive grant,suppose, admit that he shall arrive, I will send him with a message. The sense of if, or give, in this use, is grant, admit, cause to be, let the fact be,let the thing take place. If then is equivalent to grant, allow, admit. "If thou wilt, thou canst make me whole," that is, thou canst make me whole, give the fact, that thou wilt.
If thou art the son of God, command that these stones be made bread. Matthew 14
1. Whether or not.
Uncertain if by augury or chance.
Webster's Dictionary [2]
(conj.) If.
The Nuttall Encyclopedia [3]
An islet in the Gulf of Marseilles, with a castle built by Francis I., and afterwards used as a State prison.
