So if the Son sets you free, you will be free indeed.
If the Son therefore shall make you free, ye shall be free indeed.
So if the Son liberates you [makes you free men], then you are really and unquestionably free.
If therefore the Son shall make you free, ye shall be free indeed.
Therefore, if the Son makes you free, you really will be free.
Therefore, if the Son has set you free, then you will truly be free.