Ye are forbidden to marry your mothers, and your daughters, and your sisters, and your aunts both on the fathers and on the mothers side, and your brothers daughters, and your sisters daughters, and your mothers who have given you suck, and your foster-sisters, and your wives mothers, and your daughters-in-law which are under your tuition, born of your wives unto whom ye have gone in, -- but if ye have not gone in unto them, it shall be no sin in you to marry them, -- and the wives of your sons who proceed out of your loins; and ye are also forbidden to take to wife two sisters; except what is already past: For God is gracious and merciful.