John 18:2

The place was well known to Judas, the betrayer, for Jesus and his disciples had often met there.

Luke 21:37

During the days, Jesus continued to teach in the Temple Courts, but he went out and spent the nights on the hill called the 'Mount of Olives.'

Luke 22:39

Jesus then went out, and made his way as usual to the Mount of Olives, followed by his disciples.

Mark 11:11-12

Jesus entered Jerusalem, and went into the Temple Courts; and, after looking round at everything, as it was already late, he went out to Bethany with the Twelve.

Treasury of Scripture Knowledge

Summary

And Judas also, which betrayed him, knew the place: for Jesus ofttimes resorted thither with his disciples.

General references

Bible References

For

Mark 11:11
Jesus entered Jerusalem, and went into the Temple Courts; and, after looking round at everything, as it was already late, he went out to Bethany with the Twelve.
Luke 21:37
During the days, Jesus continued to teach in the Temple Courts, but he went out and spent the nights on the hill called the 'Mount of Olives.'
Luke 22:39
Jesus then went out, and made his way as usual to the Mount of Olives, followed by his disciples.

General references

Mark 14:42
Up, and let us be going. Look! my betrayer is close at hand."