What the Bible says about Birth Control

Genesis 1:28

Be fruitful, and multiply, and replenish the earth, and subdue it.

Genesis 9:1

Be fruitful, and multiply, and replenish the earth.

Genesis 9:7

Be ye fruitful, and multiply; bring forth abundantly in the earth, and multiply therein.

Genesis 38:9-10

And Onan knew that the seed should not be his; and it came to pass, when he went in unto his brother's wife, that he spilled it on the ground, lest that he should give seed to his brother. And the thing which he did displeased the LORD: wherefore he slew him also.

The Brick Testament

Er and Onan