'Restraint' in the Bible

Do not deprive each other [of marital rights], except perhaps by mutual consent for a time, so that you may devote yourselves [unhindered] to prayer, but come together again so that Satan will not tempt you [to sin] because of your lack of self-control.

But if they do not have [sufficient] self-control, they should marry; for it is better to marry than to burn with passion.

Now I say this for your own benefit; not to restrict you, but to promote what is appropriate and secure undistracted devotion to the Lord.