# Do not deprive each other, except by mutual agreement and for

"Only if you both agree to deprive each other should you do so, and even then only do so for" 

# so that you may devote yourselves to prayer

"in order to commit yourselves to a period of especially deep prayer"

# come together again

"sleep together again"

# because of your lack of self-control

"because after some days, your sexual desires will be harder to keep under control"