Great.
Lets start with the scriptural proof texts that say its OK to let your seed fall to the ground, then move on to the early church father's quotes defending the use of abortifacient hormonal contraceptives, shall we?
And then, since your church's embrace of contraception lead to legalized abortion, we'll do a nice little study about what happens when churches lead little ones astray (not by sinners' refusal to listen to their church, as in the case of priests, but by sinners confirmed in their vice from the pulpit, as in your churches.)
BigMack