11 The imperfect with the infinitive absolute means that the declaration is unambiguous, that the servant will clearly affirm that he wants to stay with the master. Gesenius says that in a case like this the infinitive emphasizes the importance of the condition on which some consequence depends ( §113.o).
12 Or taken as a desiderative imperfect, it would say, “I do not want to go out free.”

In other versions

But if the slave plainly says, ‘I love my master, my wife, and my children; I will not go out free,’

“But if the servant declares, ‘I love my master and my wife and children and do not want to go free,’

“But if the slave declares, ‘I love my master, my wife, and my children; I do not want to leave as a free man,’

But the slave may declare, ‘I love my master, my wife, and my children. I don’t want to go free.’

But if the slave explicitly says, “I love my master, my wife, and my children; I will not go out free,”

And if the servant shall plainly say, I love my master, my wife, and my children; I will not go out free:

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