This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

Yes, Jesus taught them how to pray.

Matthew 6:9-13 View context

After this manner therefore pray ye: Our Father which art in heaven, Hallowed be thy name.

Thy kingdom come. Thy will be done in earth, as [it is] in heaven.

Give us this day our daily bread.

And forgive us our debts, as we forgive our debtors.

And lead us not into temptation, but deliver us from evil: For thine is the kingdom, and the power, and the glory, for ever. Amen.

No, they don't know how to pray.

Romans 8:26 View context

Likewise the Spirit also helpeth our infirmities: for we know not what we should pray for as we ought: but the Spirit itself maketh intercession for us with groanings which cannot be uttered.