The whole of Goespel teaching on pharasees makes it pretty clear that we are to treat homosexuals with compassion rather than self-righteousness. Believe them when they say they were born that way and when science confirms this (which it has). Facing the implications of that for our own biases is what the Gospel demands if you take it as a whole.  This is what Jesus meant about the difficulty of entering the kingdom of God and who it is difficult for. Not for the gays (pederastry is a separate case), but for those lacking compassion and perfect love.