Whenever you hear someone say a scripture or Bible passage is no longer valid because the Kingdom of God has come, understand they are in error.
Ask yourself are we face to face with God? The answer is no.
It is true Jesus has come. And it is true the Kingdom of God can live in us. It is also true, the Lord’s Prayer found in Matthew 6:9-13 should still be prayed. “Thy Kingdom come.” Some erroneously say it came with Jesus. I tell you, we will know when God’s Kingdom has come, because we will either be face to face with him or in Hell.
Let no one lead you astray. Why call him Lord, Lord and do not what he says?
Matthew 6:9-13 KJV 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.