Jewish same-sex parents have hit back at Liberal Democrat minister Sarah Teather’s claim that gay marriage will make family life more unstable.

In a letter to Ms Teather, Natalie Grazin, who is bringing up her children with her partner Samantha Cohen, wrote: “I completely agree with you about marriage being the right context in which to have children. That’s precisely why we chose to have a religious wedding in 2005, before we began the process of conceiving.”

One Jewish lesbian mother, Pippa, wrote to Ms Grazin supporting her stance.

She said: “People like us need to speak out because our children are just regular kids."

“My children are very clear on their identity. One of them is through a Jewish marriage to a man. The other one is [through] donor insemination at the London Women’s Clinic.”

Liberal Judaism chief executive Rabbi Danny Rich will today give evidence today to the Public Bill Committee on the Marriage (Same Sex Couples) Bill.

He will argue for Liberal Judaism’s right to opt into offering same-sex marriage ceremonies. The movement was the first religious denomination to publish official liturgy for same-sex ceremonies.

A spokeswoman for Ms Teather declined to comment.